<?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>0250-5460</journal-id>
<journal-title><![CDATA[Revista Boliviana de Química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Bol. Quim]]></abbrev-journal-title>
<issn>0250-5460</issn>
<publisher>
<publisher-name><![CDATA[Universidad Mayor de San Andrés]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0250-54602021000100046</article-id>
<article-id pub-id-type="doi">10.34098/2078-3949.38.1.5</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Hidroquímica de aguas subterráneas en el municipio de San Pedro, Santa Cruz, Bolivia: Determinación de fluoruro]]></article-title>
<article-title xml:lang="en"><![CDATA[Hydrochemistry of groundwater in the municipality of San Pedro, Santa Cruz, Bolivia: Determination of fluoride]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huallpara]]></surname>
<given-names><![CDATA[Lizangela]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ormachea]]></surname>
<given-names><![CDATA[Mauricio]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escalera]]></surname>
<given-names><![CDATA[Ramiro]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ormachea]]></surname>
<given-names><![CDATA[Omar]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Suso]]></surname>
<given-names><![CDATA[Jesús]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[María Eugenia]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hornero]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Robles]]></surname>
<given-names><![CDATA[Virginia]]></given-names>
</name>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Mayor de San Andres UMSA  ]]></institution>
<addr-line><![CDATA[La Paz ]]></addr-line>
<country>Bolivia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Privada Boliviana  ]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Privada Boliviana  ]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Geológico y Minero de España  ]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Geólogos del Mundo  ]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<volume>38</volume>
<numero>1</numero>
<fpage>46</fpage>
<lpage>55</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_arttext&amp;pid=S0250-54602021000100046&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_abstract&amp;pid=S0250-54602021000100046&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_pdf&amp;pid=S0250-54602021000100046&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El agua subterránea es la principal fuente de consumo en muchos centros urbanos y áreas rurales de Bolivia, tal es el caso del Municipio de San Pedro ubicado en el departamento de Santa Cruz. El presente estudio se realizó con la finalidad de determinar la calidad fisicoquímica del agua subterránea de consumo en 16 comunidades rurales ubicadas dentro del municipio de San Pedro. Los resultados mostraron valores de pH ligeramente alcalinos comprendidos entre 7,8 y 8,6 y la conductividad eléctrica mostró valores en un rango que va de 313,3 a 1189 µS/cm. Las aguas son predominantemente del tipo Na-HCO3 y contienen elevadas concentraciones de fluoruro (F-) en un rango que va de 2,1 a 6,4 mg/L excediendo el valor máximo recomendado por la Organización Mundial para la Salud (OMS). Cálculos de índice de saturación (IS) muestran que la fase mineral que podría dar origen al elevado contenido de F- en agua es la (F-Apatita).]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The main source of drinking water in many urban centers and rural areas of Bolivia is Groundwater. This is the case of the Municipality of San Pedro located in the department of Santa Cruz. The present study was carried out to determine the physicochemical quality of groundwater used for consumption in 16 rural communities located within the municipality of San Pedro. The results showed slightly alkaline pH values between 7.8 and 8.6 and electrical conductivity in the range 313.3 to 1189 µS/cm. The waters are predominantly of the Na-HCO3 type and contain high concentrations of fluoride (F-) in in the range 2.1 to 6.4 mg/L, exceeding thus, the maximum value recommended by the World Health Organization (WHO). Saturation index (SI) calculations showed that the mineral phase that could give rise to the high F- content in water is (F-Apatite).]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Fluoruro]]></kwd>
<kwd lng="es"><![CDATA[Agua subterránea]]></kwd>
<kwd lng="es"><![CDATA[Hidroquímica]]></kwd>
<kwd lng="es"><![CDATA[Calidad del agua.]]></kwd>
<kwd lng="en"><![CDATA[Fluoride]]></kwd>
<kwd lng="en"><![CDATA[Groundwater]]></kwd>
<kwd lng="en"><![CDATA[Hydrochemistry]]></kwd>
<kwd lng="en"><![CDATA[Water Quality.]]></kwd>
</kwd-group>
</article-meta>
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