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Alfa Revista de Investigación en Ciencias Agronómicas y Veterinaria

versão On-line ISSN 2664-0902

Resumo

LOPEZ PINTA, Wilmer Andrés  e  SILVERIO CALDERON, Carmen Elizabeth. Residual organochlorine pesticides in raw milk from El Oro province, Ecuador. Rev. Inv. Cs. Agro. y Vet. [online]. 2022, vol.6, n.18, pp.393-405.  Epub 04-Nov-2022. ISSN 2664-0902.  https://doi.org/10.33996/revistaalfa.v6i18.176.

For the control of pests in agriculture and livestock, herbicides and pesticides have been used, in different countries of America and Europe the use of organchlorine pesticides is prohibited due to the risk they represent for the health of animal life and the environment. However, despite the restrictions, these substances remain in the food chain because they accumulate in fatty tissue, being insoluble in water. The objective of this study was to analyze samples of raw milk from three farms located in two climatic zones of the Province of El Oro in Ecuador, to detect the presence of residual organochlorine pesticides. Taken six samples of raw milk according to the Ecuadorian Technical Standard NTE INEN-ISO 707. For the preparation and analysis of the samples, the Quechers version and Gas Chromatography coupled to Mass Spectrometry were used. In this research, residues of: alpha BHC, beta BHC, delta BHC, gamma BHC, Heptachlor, Aldrin, Heptachlor Epoxide, Alpha Chlordane, Gamma Chlordane, alpha Endosulfan, beta Endosulfan, 4-4' DDE, Dieldrin, Endrin, 4 -4' DDD, Endrin Aldehyde, 4-4' DDT, Endosulfan Sulfate, Methoxychlor and Endrin Ketone in samples of raw milk. The results of the analyzes carried out at the Health Toxicology Research Laboratory of the Universidad Andina Simón Bolívar concluded that there was no presence of these analytes. The conclusion is that the milk from these herds can be marketed and consumed by the population and that it does not represent a risk in terms of the content of organochlorine pesticides.

Palavras-chave : organ chlorine pesticides; raw milk; climatic floors; gas chromatography; mass spectrometry; Quechers.

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