<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1683-0789</journal-id>
<journal-title><![CDATA[Acta Nova]]></journal-title>
<abbrev-journal-title><![CDATA[RevActaNova.]]></abbrev-journal-title>
<issn>1683-0789</issn>
<publisher>
<publisher-name><![CDATA[Universidad Católica Boliviana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1683-07892023000100017</article-id>
<article-id pub-id-type="doi">10.35319/acta-nova.202313</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Accumulation of potentially toxic elements in peri-urban agricultural areas of Cochabamba, Bolivia]]></article-title>
<article-title xml:lang="es"><![CDATA[Acumulación de elementos potencialmente tóxicos en zonas agrícolas periurbanas de Cochabamba, Bolivia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Coca-Salazar]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ovando Crespo]]></surname>
<given-names><![CDATA[Cristina Karen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Burgos Villegas]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quispe Zenteno]]></surname>
<given-names><![CDATA[Iván]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cáceres Claros]]></surname>
<given-names><![CDATA[Alfredo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Mayor de San Simón Laboratorio de Suelos y Aguas ]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Mayor de San Simón Centro de Investigaciones y Servicios en Teledetección CISTEL ]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2023</year>
</pub-date>
<volume>11</volume>
<numero>1</numero>
<fpage>17</fpage>
<lpage>27</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_arttext&amp;pid=S1683-07892023000100017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_abstract&amp;pid=S1683-07892023000100017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_pdf&amp;pid=S1683-07892023000100017&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Agricultural soils located in peri-urban zones are at risk of contamination with potentially toxic elements due to their proximity to urban and industrial areas. The accumulation of these elements may affect ecosystem functioning and be hazardous for human health, consequently, evaluation of their concentrations is essential to determine accumulation patterns and to implement remediation measures if required. This study evaluated the concentrations of potentially toxic elements Mn, Zn, Pb, Cu and Cd in agricultural fields and irrigation canals of two peri-urban agricultural areas (Martillo and Tamborada) of Cochabamba, Bolivia. Soil and sediment samples were collected from agricultural fields and irrigation canals and their pH, electrical conductivity, organic matter, and the concentrations of Mn, Zn, Pb, Cu and Cd were determined. The results suggest accumulation of Zn, Cu and Mn in irrigation canals of both agricultural areas. Comparison of Tamborada and Martillo agricultural soils suggest Pb and Zn accumulation in Tamborada, while focal Cd accumulation was observed in Martillo. Element concentrations were within natural range variation of uncontaminated soils except for Zn in irrigation canals of Tamborada. The use of wastewater for irrigation, automobile-related diffuse pollution and the dumping of solid wastes in agricultural areas are potential contamination sources. While the alkaline, saline soils with loam and clay texture would contribute to reduce the bioavailability of potentially toxic elements, in the long-term, accumulation could lead to contamination and increase the risk of environmental and health hazard. The median concentrations for Mn, Zn, Pb and Cu (550.74, 75.95, 32.35 and 31.95 mg kg-1, respectively) are suggested as baselines values for the area.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Los suelos agrícolas de áreas peri-urbanas están en riesgo de contaminación con elementos potencialmente tóxicos debido a su proximidad con áreas urbanas e industriales. La acumulación de estos elementos puede afectar los ecosistemas y la salud humana, por lo que la evaluación de sus concentraciones es importante para determinar los patrones de acumulación e implementar medidas de remediación si fuesen necesarias. Este estudio evaluó los elementos potencialmente tóxicos Mn, Zn, Pb, Cu y Cd en dos áreas agrícolas (Martillo y Tamborada) de la zona peri-urbana de Cochabamba, Bolivia. Se recolectaron muestras de suelo y sedimento y se determinó su pH, conductividad eléctrica, contenido de materia orgánica y las concentraciones de Mn, Zn, Pb, Cu y Cd. Los resultados sugieren acumulación de Zn, Cu y Mn en canales de riego de ambas áreas. Comparación de suelos agrícolas de Tamborada y Martillo sugieren acumulación de Pb en Tamborada, mientras que se observó acumulación focal de Cd en Martillo. Las concentraciones estuvieron dentro del rango de variación de suelos no contaminados, exceptuando el Zn en canales de riego de Tamborada. El uso de aguas residuales para riego, las emisiones atmosféricas de automóviles y el vertido de desechos sólidos son potenciales fuentes de contaminación. Si bien los suelos alcalinos y salinos contribuirían a reducir la disponibilidad de estos elementos, a largo plazo, su acumulación podría conducir a la contaminación de los suelos agrícolas. Las concentraciones medias de Mn, Zn, Pb y Cu (550.74, 75.95, 32.35 y 31.95 mg kg-1, respectivamente) se sugieren como valores de referencia para el área de estudio.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Heavy metals]]></kwd>
<kwd lng="en"><![CDATA[micronutrients]]></kwd>
<kwd lng="en"><![CDATA[soil contamination]]></kwd>
<kwd lng="en"><![CDATA[baseline concentration]]></kwd>
<kwd lng="en"><![CDATA[diffuse pollution]]></kwd>
<kwd lng="es"><![CDATA[metales pesados]]></kwd>
<kwd lng="es"><![CDATA[micronutrientes]]></kwd>
<kwd lng="es"><![CDATA[contaminación del suelo]]></kwd>
<kwd lng="es"><![CDATA[concentración de referencia]]></kwd>
<kwd lng="es"><![CDATA[contaminación difusa]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Albering]]></surname>
<given-names><![CDATA[H. J.]]></given-names>
</name>
<name>
<surname><![CDATA[S. M. Van Leusen]]></surname>
<given-names><![CDATA[E. J. C. Moonen]]></given-names>
</name>
<name>
<surname><![CDATA[J. A. Hoogewerff]]></surname>
<given-names><![CDATA[J. C. S. Kleinjans]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Human health risk assessment: A case study involving heavy metal soil contamination after the flooding of the river Meuse during the winter of 1993-1994]]></article-title>
<source><![CDATA[Environmental Health Perspectives]]></source>
<year>1999</year>
<volume>107</volume>
<page-range>37-43</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Allen]]></surname>
<given-names><![CDATA[S. E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Chemical analysis of ecological materials]]></source>
<year>1989</year>
<edition>2</edition>
<publisher-loc><![CDATA[Oxford, UK ]]></publisher-loc>
<publisher-name><![CDATA[Blackwell Scientific Publications]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alloway]]></surname>
<given-names><![CDATA[B. J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Heavy metals in soils. Page Trace elements and metalloids in soils and their bioavailability]]></source>
<year>2013</year>
<publisher-loc><![CDATA[Ontario, Canada ]]></publisher-loc>
<publisher-name><![CDATA[Third. Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alloway]]></surname>
<given-names><![CDATA[B. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Heavy Metals and Metalloids as Micronutrients for Plants and Animals]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Alloway]]></surname>
<given-names><![CDATA[B. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Trevors]]></surname>
<given-names><![CDATA[J. T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Heavy metals in soils]]></source>
<year>2003</year>
<page-range>195-2009</page-range><publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[Third. Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Antequera]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<source><![CDATA[Carpeta de datos de la zona Sur de Cochabamba]]></source>
<year>2008</year>
<publisher-loc><![CDATA[Cochabamba, Bolivia ]]></publisher-loc>
<publisher-name><![CDATA[Centro de Documentación e Información]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Antoniadis]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Shaheen]]></surname>
<given-names><![CDATA[S. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Levizou]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Shahid]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Niazi]]></surname>
<given-names><![CDATA[N. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Vithanage]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Bolan]]></surname>
<given-names><![CDATA[Y. S. Ok, N.]]></given-names>
</name>
<name>
<surname><![CDATA[Rinklebe]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A critical prospective analysis of the potential toxicity of trace element regulation limits in soils worldwide: Are they protective concerning health risk assessment? - A review]]></article-title>
<source><![CDATA[Environment International]]></source>
<year>2019</year>
<volume>127</volume>
<page-range>819-47</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Balderrama]]></surname>
<given-names><![CDATA[M. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Tassi]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Miranda]]></surname>
<given-names><![CDATA[A. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Aramayo]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Cazorla]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
</person-group>
<source><![CDATA[Rural migration in Bolivia: the impact of climate change, economic crisis and state policy]]></source>
<year>2011</year>
<publisher-loc><![CDATA[London, UK ]]></publisher-loc>
<publisher-name><![CDATA[International Institute for Environment and Development (IIED)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barceloux]]></surname>
<given-names><![CDATA[D. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Manganese]]></article-title>
<source><![CDATA[Clinical Toxicology]]></source>
<year>1999</year>
<volume>37</volume>
<page-range>293-307</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barnes]]></surname>
<given-names><![CDATA[A. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Bartle]]></surname>
<given-names><![CDATA[K. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Thibon]]></surname>
<given-names><![CDATA[V. R. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A review of zinc dialkyldithiophosphates (ZDDPS): Characterisation and role in the lubricating oil]]></article-title>
<source><![CDATA[Tribology International]]></source>
<year>2001</year>
<volume>34</volume>
<page-range>389-95</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bi]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[Ren]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Gong]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[He]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Ma]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Transfer of cadmium and lead from soil to mangoes in an uncontaminated area, Hainan Island, China]]></article-title>
<source><![CDATA[Geoderma]]></source>
<year>2010</year>
<volume>155</volume>
<page-range>115-20</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Blackwell]]></surname>
<given-names><![CDATA[K. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Tobin]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Avery]]></surname>
<given-names><![CDATA[S. V.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Manganese toxicity towards Saccharomyces cerevisiae : Dependence on intracellular and extracellular magnesium concentrations]]></article-title>
<source><![CDATA[Applied Microbiology and Biotechnology]]></source>
<year>1998</year>
<volume>49</volume>
<page-range>751-7</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Blanes]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Bolivia: Las áreas metropolitanas en perspectiva de desarrollo regional]]></article-title>
<source><![CDATA[Eure]]></source>
<year>2006</year>
<volume>32</volume>
<page-range>21-36</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bo&#353;kovi&#263;-Rako&#269;evi&#263;]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Milivojevi&#263;]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Milo&#353;evi&#263;]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Paunovi&#263;]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Heavy metal content of soils and plum orchards in an uncontaminated area]]></article-title>
<source><![CDATA[Water, Air, and Soil Pollution]]></source>
<year>2014</year>
<volume>225</volume>
<page-range>1-13</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bot]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Benites]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[The importance of soil organic matter, Key to drought-resistant soil and sustained food production]]></source>
<year>2005</year>
<publisher-loc><![CDATA[Rome, Italy ]]></publisher-loc>
<publisher-name><![CDATA[Page Food and Agriculture Organization. Food and Agriculture Organization of the United Nations]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Broos]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Warne]]></surname>
<given-names><![CDATA[M. S. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Heemsbergen]]></surname>
<given-names><![CDATA[D. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Stevens]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Barnes]]></surname>
<given-names><![CDATA[M. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Correll]]></surname>
<given-names><![CDATA[R. L.]]></given-names>
</name>
<name>
<surname><![CDATA[McLaughlin]]></surname>
<given-names><![CDATA[M. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Soil factors controlling the toxicity of copper and zinc to microbial processes in Australian soils]]></article-title>
<source><![CDATA[Environmental Toxicology and Chemistry]]></source>
<year>2007</year>
<volume>26</volume>
<page-range>583-90</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Buekers]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Degryse]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Maes]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Smolders]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modelling the effects of ageing on Cd, Zn, Ni and Cu solubility in soils using an assemblage model]]></article-title>
<source><![CDATA[European Journal of Soil Science]]></source>
<year>2008</year>
<volume>59</volume>
<page-range>1160-70</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cai]]></surname>
<given-names><![CDATA[Q.]]></given-names>
</name>
<name>
<surname><![CDATA[Long]]></surname>
<given-names><![CDATA[M. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhu]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhou]]></surname>
<given-names><![CDATA[Q. Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Food chain transfer of cadmium and lead to cattle in a lead-zinc smelter in Guizhou, China]]></article-title>
<source><![CDATA[Environmental Pollution]]></source>
<year>2009</year>
<volume>157</volume>
<page-range>3078-82</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cassells]]></surname>
<given-names><![CDATA[A. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Dodds]]></surname>
<given-names><![CDATA[E. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Tetra-Ethyl lead poisoning]]></article-title>
<source><![CDATA[British Medical Journal]]></source>
<year>1946</year>
<volume>9</volume>
<page-range>685-1</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cossio]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Perez-Mercado]]></surname>
<given-names><![CDATA[L. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Norrman]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Dalahmeh]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Vinnerås]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Mercado]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[McConville]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Impact of treatment plant management on human health and ecological risks from wastewater irrigation in developing countries-case studies from Cochabamba, Bolivia]]></article-title>
<source><![CDATA[International Journal of Environmental Health Research]]></source>
<year>2021</year>
<volume>31</volume>
<page-range>355-73</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[D&#8217;Abzac]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Flores]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Gonzales-Ucumari]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Sejas]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Pinedo]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Guibaud]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Buzier]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Fondanèche]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Guibal]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Lissalde]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Diagnóstico ecotoxicológico de la biodisponibilidad de los polutantes en el río Rocha, Cochabamba]]></source>
<year>2020</year>
<publisher-loc><![CDATA[Cochabamba, Bolivia ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Davies]]></surname>
<given-names><![CDATA[B. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A graphical estimation of the normal lead content of some British soils]]></article-title>
<source><![CDATA[Geoderma]]></source>
<year>1983</year>
<volume>29</volume>
<page-range>67-75</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="">
<collab>Estado Plurinacional de Bolivia</collab>
<source><![CDATA[Decreto Supremo No 2400]]></source>
<year>2015</year>
<page-range>1-17</page-range><publisher-loc><![CDATA[La Paz, Bolivia ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fang]]></surname>
<given-names><![CDATA[S. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Hu]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Sun]]></surname>
<given-names><![CDATA[W. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Pan]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Spatial variations of heavy metals in the soils of vegetable-growing land along urban-rural gradient of Nanjing, China]]></article-title>
<source><![CDATA[International Journal of Environmental Research and Public Health]]></source>
<year>2011</year>
<volume>8</volume>
<page-range>1805-16</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fleming]]></surname>
<given-names><![CDATA[G. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Parle]]></surname>
<given-names><![CDATA[P. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Heavy metals in soils, herbage and vegetables from an industrialised area west of Dublin City]]></article-title>
<source><![CDATA[Irish Journal of Agricultural Research]]></source>
<year>1977</year>
<volume>16</volume>
<page-range>35-48</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fox]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Weisberg]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Price]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Adler]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Bates]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Baud-bovy]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Bolker]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Ellison]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Firth]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Friendly]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Gorjanc]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Graves]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Heiberger]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Laboissiere]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Maechler]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Monette]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Murdoch]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Ogle]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Ripley]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Venables]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Walker]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Winsemius]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Zeileis]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<collab>R-core</collab>
<source><![CDATA[Companion to Applied Regression]]></source>
<year>2018</year>
</nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fukushima]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ishizaki]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Sakamoto]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Kobayashi]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cadmium concentration in rice eaten by farmers in the Jinzu River Basin]]></article-title>
<source><![CDATA[Japanese Journal of Hygiene]]></source>
<year>1973</year>
<volume>28</volume>
<page-range>406-15</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="">
<collab>Gaceta Nacional de Bolivia</collab>
<source><![CDATA[Ley de 8 de enero de 1945]]></source>
<year>1945</year>
<page-range>1-9</page-range><publisher-loc><![CDATA[La Paz, Bolivia ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="">
<collab>Gaceta Nacional de Bolivia</collab>
<source><![CDATA[Decreto Supremo N°1264 del 08 de Julio de 1948]]></source>
<year>1948</year>
<publisher-loc><![CDATA[La Paz, Bolivia ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Galán]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández-Caliani]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Aparicio]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Romero]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Influence of geological setting on geochemical baselines of trace elements in soils. Application to soils of South-West Spain]]></article-title>
<source><![CDATA[Journal of Geochemical Exploration]]></source>
<year>2008</year>
<volume>98</volume>
<page-range>89-106</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ghielmi]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Mondaca]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Luján]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Diagnóstico sobre el nivel de contaminación de acuíferos en el distrito 9 del municipio de Cercado en la ciudad de Cochabamba y propuesta para su protección y control]]></article-title>
<source><![CDATA[Acta Nova]]></source>
<year>2008</year>
<volume>4</volume>
<page-range>51-86</page-range></nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gutiérrez]]></surname>
<given-names><![CDATA[E. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Cáceres]]></surname>
<given-names><![CDATA[A. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Correlación entre la conductividad eléctrica medida en el extracto de saturación del suelo y en extractos con cinco relaciones sueloagua]]></article-title>
<source><![CDATA[Revista de Investigación en Ciencias Agronómicas y Veterinarias]]></source>
<year>2018</year>
<volume>2</volume>
<page-range>144-56</page-range></nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hakanson]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[An ecological risk index for aquatic pollution control. A sedimentological approach]]></article-title>
<source><![CDATA[Water Research]]></source>
<year>1980</year>
<volume>14</volume>
<page-range>975-1001</page-range></nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Harrell]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
</person-group>
<source><![CDATA[R package Hmisc]]></source>
<year>2022</year>
<publisher-name><![CDATA[Harrell Miscellaneous]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Herbas]]></surname>
<given-names><![CDATA[B. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Challapa]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Vargas]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Arce]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Teran]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluación de la vulnerabilidad socio ambiental del sector lechero de La Maica (Cochabamba) frente al cambio climático]]></article-title>
<source><![CDATA[Acta Nova]]></source>
<year>2017</year>
<volume>8</volume>
</nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hettiarachchi]]></surname>
<given-names><![CDATA[G. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Pierzynski]]></surname>
<given-names><![CDATA[G. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Soil lead bioavailability and in situ remediation of lead-contaminated soils: A review]]></article-title>
<source><![CDATA[Environmental Progress]]></source>
<year>2004</year>
<volume>23</volume>
<page-range>78-93</page-range></nlm-citation>
</ref>
<ref id="B36">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[Q.]]></given-names>
</name>
<name>
<surname><![CDATA[Deng]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Japenga]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[He]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Heavy metal pollution and health risk assessment of agricultural soils in a typical peri-urban area in southeast China]]></article-title>
<source><![CDATA[Journal of Environmental Management]]></source>
<year>2018</year>
<volume>207</volume>
<page-range>159-68</page-range></nlm-citation>
</ref>
<ref id="B37">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Imbrenda]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Quaranta]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Salvia]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Egidi]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Salvati]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Prokopovà]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Coluzzi]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Lanfredi]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Land degradation and metropolitan expansion in a peri-urban environment]]></article-title>
<source><![CDATA[Geomatics, Natural Hazards and Risk]]></source>
<year>2021</year>
<volume>12</volume>
<page-range>1797-818</page-range></nlm-citation>
</ref>
<ref id="B38">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[István]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Jones]]></surname>
<given-names><![CDATA[J. B.]]></given-names>
</name>
</person-group>
<source><![CDATA[The handbook of trace elements]]></source>
<year>1997</year>
<publisher-loc><![CDATA[New York, USA ]]></publisher-loc>
<publisher-name><![CDATA[CRC Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B39">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jung]]></surname>
<given-names><![CDATA[M. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Heavy metal concentrations in soils and factors affecting metal uptake by plants in the vicinity of a Korean Cu-W mine]]></article-title>
<source><![CDATA[Sensors]]></source>
<year>2008</year>
<volume>8</volume>
<page-range>2413-23</page-range></nlm-citation>
</ref>
<ref id="B40">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kassambara]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Mundt]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<source><![CDATA[factoextra: Extract and visualize the results of multivariate data analyses]]></source>
<year>2019</year>
</nlm-citation>
</ref>
<ref id="B41">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kaur]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Sharma]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A review on heavy metal accumulation and toxicity in biotic and abiotic components]]></article-title>
<source><![CDATA[Earth and Environmental Science]]></source>
<year>2021</year>
<volume>889</volume>
<page-range>1-9</page-range></nlm-citation>
</ref>
<ref id="B42">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Keshavarzi]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Najmeddin]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Moore]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Afshari Moghaddam]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Risk-based assessment of soil pollution by potentially toxic elements in the industrialized urban and peri-urban areas of Ahvaz metropolis, southwest of Iran]]></article-title>
<source><![CDATA[Ecotoxicology and Environmental Safety]]></source>
<year>2019</year>
<volume>167</volume>
<page-range>365-75</page-range></nlm-citation>
</ref>
<ref id="B43">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kibblewhite]]></surname>
<given-names><![CDATA[M. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Contamination of agricultural soil by urban and peri-urban highways: An overlooked priority?]]></article-title>
<source><![CDATA[Environmental Pollution]]></source>
<year>2018</year>
<volume>242</volume>
<page-range>1331-6</page-range></nlm-citation>
</ref>
<ref id="B44">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kreider]]></surname>
<given-names><![CDATA[M. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Panko]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
<name>
<surname><![CDATA[McAtee]]></surname>
<given-names><![CDATA[B. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Sweet]]></surname>
<given-names><![CDATA[L. I.]]></given-names>
</name>
<name>
<surname><![CDATA[Finley]]></surname>
<given-names><![CDATA[B. L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Physical and chemical characterization of tire-related particles: Comparison of particles generated using different methodologies]]></article-title>
<source><![CDATA[Science of the Total Environment]]></source>
<year>2010</year>
<volume>408</volume>
<page-range>652-9</page-range></nlm-citation>
</ref>
<ref id="B45">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Livesley]]></surname>
<given-names><![CDATA[S. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Escobedo]]></surname>
<given-names><![CDATA[F. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Morgenroth]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The biodiversity of urban and peri-urban forests and the diverse ecosystem services they provide as socio-ecological systems]]></article-title>
<source><![CDATA[Forests]]></source>
<year>2016</year>
<volume>7</volume>
<page-range>10-4</page-range></nlm-citation>
</ref>
<ref id="B46">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lucchini]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Guazzetti]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Zoni]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Donna]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Peter]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Zacco]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Salmistraro]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Bontempi]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Zimmerman]]></surname>
<given-names><![CDATA[N. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[D. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Tremor, olfactory and motor changes in Italian adolescents exposed to historical ferro-manganese emission]]></article-title>
<source><![CDATA[NeuroToxicology]]></source>
<year>2012</year>
<volume>33</volume>
<page-range>687-96</page-range></nlm-citation>
</ref>
<ref id="B47">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Machado]]></surname>
<given-names><![CDATA[R. M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Serralheiro]]></surname>
<given-names><![CDATA[R. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Soil salinity: Effect on vegetable crop growth. Management practices to prevent and mitigate soil salinization]]></article-title>
<source><![CDATA[Horticulturae]]></source>
<year>2017</year>
<volume>3</volume>
<page-range>1-13</page-range></nlm-citation>
</ref>
<ref id="B48">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mahurpawar]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effects of heavy metals on human health]]></article-title>
<source><![CDATA[International Journal of Research - Granthaalayah]]></source>
<year>2015</year>
<volume>3</volume>
<page-range>1-7</page-range></nlm-citation>
</ref>
<ref id="B49">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mamani]]></surname>
<given-names><![CDATA[O. F. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ampuero]]></surname>
<given-names><![CDATA[R. A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Evaluación del proceso de contaminación por vertidos de aguas residuales domésticas y residuos sólidos urbanos en la infraestructura de distribución del Sistema Nacional de Riego N°1 &#8220;La Angostura.&#8221; Cochabamba, Bolivia]]></source>
<year>2001</year>
</nlm-citation>
</ref>
<ref id="B50">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mapanda]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Mangwayana]]></surname>
<given-names><![CDATA[E. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Nyamangara]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Giller]]></surname>
<given-names><![CDATA[K. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The effect of long-term irrigation using wastewater on heavy metal contents of soils under vegetables in Harare, Zimbabwe]]></article-title>
<source><![CDATA[Agriculture, Ecosystems and Environment]]></source>
<year>2005</year>
<volume>107</volume>
<page-range>151-65</page-range></nlm-citation>
</ref>
<ref id="B51">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mazurek]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Three pre-concepts regarding the internal migration in Bolivia]]></article-title>
<source><![CDATA[Rev. humanid. cienc. soc.]]></source>
<year>2007</year>
<volume>3</volume>
<page-range>1-15</page-range></nlm-citation>
</ref>
<ref id="B52">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mehta]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Allouche]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Nicol]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Walnycki]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Global environmental justice and the right to water: The case of peri-urban Cochabamba and Delhi]]></article-title>
<source><![CDATA[Geoforum]]></source>
<year>2014</year>
<volume>54</volume>
<page-range>158-66</page-range></nlm-citation>
</ref>
<ref id="B53">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mertens]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Smolders]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Zinc]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Alloway]]></surname>
<given-names><![CDATA[B. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Trevors]]></surname>
<given-names><![CDATA[J. T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Heavy metals in soils]]></source>
<year>2013</year>
<page-range>465-93</page-range></nlm-citation>
</ref>
<ref id="B54">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[J. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Hudson-Edwards]]></surname>
<given-names><![CDATA[K. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Lechler]]></surname>
<given-names><![CDATA[P. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Preston]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Macklin]]></surname>
<given-names><![CDATA[M. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Heavy metal contamination of water, soil and produce within riverine communities of the Río Pilcomayo basin, Bolivia]]></article-title>
<source><![CDATA[Science of the Total Environment]]></source>
<year>2004</year>
<volume>320</volume>
<page-range>189-209</page-range></nlm-citation>
</ref>
<ref id="B55">
<nlm-citation citation-type="">
<collab>Ministry of the Environment Finland</collab>
<source><![CDATA[Government Decree on the Assessment of Soil Contamination and Remediation Needs]]></source>
<year>2007</year>
</nlm-citation>
</ref>
<ref id="B56">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Navarro]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Maldonado]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Geografía Ecológica de Bolivia - Vegetación y Ambientes Acuáticos]]></source>
<year>2002</year>
<publisher-loc><![CDATA[Cochabamba, Bolivia ]]></publisher-loc>
<publisher-name><![CDATA[Patiño, Simón I.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B57">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[O&#8217;Neal]]></surname>
<given-names><![CDATA[S. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Zheng]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Manganese toxicity upon overexposure: a decade in review]]></article-title>
<source><![CDATA[Current environmental health reports]]></source>
<year>2015</year>
<volume>2</volume>
<page-range>315-28</page-range></nlm-citation>
</ref>
<ref id="B58">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Onianwa]]></surname>
<given-names><![CDATA[P. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Jaiyeola]]></surname>
<given-names><![CDATA[O. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Egekenze]]></surname>
<given-names><![CDATA[R. N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Heavy metals contamination of topsoil in the vicinities of auto-repair workshops, gas stations and motor-parks in a Nigerian city]]></article-title>
<source><![CDATA[Toxicological and Environmental Chemistry]]></source>
<year>2001</year>
<volume>84</volume>
<page-range>33-9</page-range></nlm-citation>
</ref>
<ref id="B59">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Oorts]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Copper]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Alloway]]></surname>
<given-names><![CDATA[B. J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Heavy metals in soils]]></source>
<year>2013</year>
<page-range>367-94</page-range><publisher-loc><![CDATA[Ontario, Canada ]]></publisher-loc>
<publisher-name><![CDATA[Third. Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B60">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Oorts]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Bronckaers]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Smolders]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Discrepancy of the microbial response to elevated copper between freshly spiked and long-term contaminated soils]]></article-title>
<source><![CDATA[Environmental Toxicology and Chemistry]]></source>
<year>2006</year>
<volume>25</volume>
<page-range>845-53</page-range></nlm-citation>
</ref>
<ref id="B61">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pareja]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hinojosa]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Luján]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Inventario de emisiones atmosféricas contaminantes de la ciudad de Cochabamba, Bolivia, año 2008]]></article-title>
<source><![CDATA[Acta Nova]]></source>
<year>2011</year>
<volume>5</volume>
</nlm-citation>
</ref>
<ref id="B62">
<nlm-citation citation-type="">
<collab>Parlamento Europeo</collab>
<source><![CDATA[Directiva 86/278/CEE del Consejo de 12 de junio de 1986 relativa a la protección del medio ambiente y, en particular, de los suelos, en la utilización de los lodos de depuradora en agricultura]]></source>
<year>1984</year>
</nlm-citation>
</ref>
<ref id="B63">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Quillaguamán]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Guzmán]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Campero]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Hoepfner]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Relos]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Mendieta]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Higdon]]></surname>
<given-names><![CDATA[S. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Eid]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández]]></surname>
<given-names><![CDATA[C. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The microbiome of a polluted urban lake harbors pathogens with diverse antimicrobial resistance and virulence genes]]></article-title>
<source><![CDATA[Environmental Pollution]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B64">
<nlm-citation citation-type="book">
<collab>R Core Team</collab>
<source><![CDATA[R: A language and environment for statistical computing]]></source>
<year>2022</year>
<publisher-loc><![CDATA[Vienna, Austria ]]></publisher-loc>
<publisher-name><![CDATA[R Foundation for Statistical Computing]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B65">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Reading]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Perron]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Marsden]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Edgar]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Saravana-Bawan]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Baba]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Crisis on Tap: Seeking Solutions for Safe Water for Indigenous Peoples]]></source>
<year>2011</year>
</nlm-citation>
</ref>
<ref id="B66">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Reeves]]></surname>
<given-names><![CDATA[R. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Baker]]></surname>
<given-names><![CDATA[A. J. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Jaffré]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Erskine]]></surname>
<given-names><![CDATA[P. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Echevarria]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[van der Ent]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A global database for plants that hyperaccumulate metal and metalloid trace elements]]></article-title>
<source><![CDATA[New Phytologist]]></source>
<year>2018</year>
<volume>218</volume>
<page-range>407-11</page-range></nlm-citation>
</ref>
<ref id="B67">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Reimann]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Filzmoser]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Garret]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Background and threshold: Critical comparison of methods of determination]]></article-title>
<source><![CDATA[Science of the Total Environment]]></source>
<year>2005</year>
<volume>346</volume>
<page-range>1-16</page-range></nlm-citation>
</ref>
<ref id="B68">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Reimann]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Garrett]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Geochemical background - Concept and reality]]></article-title>
<source><![CDATA[Science of the Total Environment]]></source>
<year>2005</year>
<volume>350</volume>
<page-range>12-27</page-range></nlm-citation>
</ref>
<ref id="B69">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rengel]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Availability of Mn, Zn and Fe in the rhizosphere]]></article-title>
<source><![CDATA[Journal of Soil Science and Plant Nutrition]]></source>
<year>2015</year>
<volume>15</volume>
<page-range>397-409</page-range></nlm-citation>
</ref>
<ref id="B70">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Renner]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Velasco]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Geología e hidrogeología del valle central de Cochabamba]]></article-title>
<source><![CDATA[Page Boletin del servicio nacional de Geologia y Mineria]]></source>
<year>2000</year>
</nlm-citation>
</ref>
<ref id="B71">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rocha]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Evaluación de aptitud agrícola en las tierras de la Tamborada para diferentes tipos de utilización de tierra]]></source>
<year>1998</year>
<publisher-loc><![CDATA[Cochabamba, Bolivia ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B72">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Romero]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Competitividad económica-ambiental para la cadena de lácteos de la agroindustria de Cochabamba]]></source>
<year>2005</year>
<publisher-loc><![CDATA[Cochabamba, Bolivia ]]></publisher-loc>
<publisher-name><![CDATA[Talleres Gráficos KIPUS]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B73">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Salminen]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Tarvainen]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The problem of defining geochemical baselines. A case study of selected elements and geological materials in Finland]]></article-title>
<source><![CDATA[Journal of Geochemical Exploration]]></source>
<year>1997</year>
<volume>60</volume>
<page-range>91-8</page-range></nlm-citation>
</ref>
<ref id="B74">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sauvé]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[McBride]]></surname>
<given-names><![CDATA[M. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Norvell]]></surname>
<given-names><![CDATA[W. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hendershot]]></surname>
<given-names><![CDATA[W. H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Copper solubility and speciation of in situ contaminated soils: Effects of copper level, pH and organic matter]]></article-title>
<source><![CDATA[Water, Air, and Soil Pollution]]></source>
<year>1997</year>
<volume>100</volume>
<page-range>133-49</page-range></nlm-citation>
</ref>
<ref id="B75">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Smolders]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Mertens]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cadmium]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Alloway]]></surname>
<given-names><![CDATA[B. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Trevors]]></surname>
<given-names><![CDATA[J. T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Heavy metals in soils]]></source>
<year>2013</year>
<page-range>283-311</page-range><publisher-loc><![CDATA[Ontario, Canada ]]></publisher-loc>
<publisher-name><![CDATA[Third. Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B76">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Steinnes]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Alloway]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<source><![CDATA[Lead]]></source>
<year>2013</year>
<page-range>395-428</page-range><publisher-loc><![CDATA[Ontario, Canada ]]></publisher-loc>
<publisher-name><![CDATA[Heavy metals in soils]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B77">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Swaine]]></surname>
<given-names><![CDATA[J. D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The traceelement content of soil]]></article-title>
<source><![CDATA[Soil Science]]></source>
<year>1956</year>
<volume>81</volume>
<page-range>156</page-range></nlm-citation>
</ref>
<ref id="B78">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Takeuchi]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Polycarbonates]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Matyjaszewski]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Möller]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Polymer Science: A Comprehensive Reference]]></source>
<year>2012</year>
<page-range>363-76</page-range><publisher-name><![CDATA[Elsevier B.V.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B79">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[La Torre]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Iovino]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Caradonia]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Copper in plant protection: current situation and prospects]]></article-title>
<source><![CDATA[Phytopathologia Mediterranea]]></source>
<year>2018</year>
<volume>57</volume>
<page-range>201-36</page-range></nlm-citation>
</ref>
<ref id="B80">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Uren]]></surname>
<given-names><![CDATA[N. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cobalt and Manganese]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Alloway]]></surname>
<given-names><![CDATA[B. J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Heavy metals in soils]]></source>
<year>2013</year>
<page-range>335-66</page-range><publisher-loc><![CDATA[Ontario, Canada ]]></publisher-loc>
<publisher-name><![CDATA[Third. Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B81">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Varun]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[D&#8217;Souza]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Pratas]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Paul]]></surname>
<given-names><![CDATA[M. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Metal contamination of soils and plants associated with the glass industry in North Central India: Prospects of phytoremediation]]></article-title>
<source><![CDATA[Environmental Science and Pollution Research]]></source>
<year>2012</year>
<volume>19</volume>
<page-range>269-81</page-range></nlm-citation>
</ref>
<ref id="B82">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[de Vries]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Römkens]]></surname>
<given-names><![CDATA[P. F. a M.]]></given-names>
</name>
<name>
<surname><![CDATA[Schütze]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Critical soil concentrations of Cadmium, Lead, and Mercury in view of health effects on humans and animals]]></article-title>
<source><![CDATA[Rev Environ Contam Toxicol]]></source>
<year>2007</year>
<volume>191</volume>
<page-range>91-130</page-range></nlm-citation>
</ref>
<ref id="B83">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wada]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[What are trace elements? &#8212; Their deficiency and excess states]]></article-title>
<source><![CDATA[Japan Medical Association Journal]]></source>
<year>2004</year>
<volume>47</volume>
<page-range>351</page-range></nlm-citation>
</ref>
<ref id="B84">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wickham]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Romain]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Lionel]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Müller]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<source><![CDATA[dplyr: A Grammar of data manipulation]]></source>
<year>2019</year>
</nlm-citation>
</ref>
<ref id="B85">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wijayawardena]]></surname>
<given-names><![CDATA[M. A. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Naidu]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Megharaj]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Lamb]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Thavamani]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Kuchel]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Influence of ageing on lead bioavailability in soils: a swine study]]></article-title>
<source><![CDATA[Environmental Science and Pollution Research]]></source>
<year>2015</year>
<volume>22</volume>
</nlm-citation>
</ref>
<ref id="B86">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[hang]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Tang]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[DeLaune]]></surname>
<given-names><![CDATA[R. D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Heavy metals and metalloids content and enrichment in Gulf Coast sediments in the vicinity of an oil refinery]]></article-title>
<source><![CDATA[Journal of Geochemical Exploration]]></source>
<year>2015</year>
<volume>159</volume>
<page-range>93-100</page-range></nlm-citation>
</ref>
<ref id="B87">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhao]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Xiang]]></surname>
<given-names><![CDATA[Q.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Sun]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Yu]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[Fang]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Soil contamination with antibiotics in a typical peri-urban area in eastern China: Seasonal variation, risk assessment, and microbial responses]]></article-title>
<source><![CDATA[Journal of Environmental Sciences]]></source>
<year>2019</year>
<volume>79</volume>
<page-range>200-12</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
