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Occurrence and Levels of Chlorinated Pesticides Residues in Cow Milk: A Human Health Risk Assessment

Journal of Agricultural Chemistry and Environment 2019年第1期8卷 58-67页

作者： olayinka abidemi ibigbami Ademola Festus Aiyesanmi Adeolu Jonathan Adesina Olugbenga Kayode Popoola Department of Chemistry Ekiti State University Ado-Ekiti Nigeria Department of Chemistry The Federal University of Technology Akure Nigeria

Background: The study determined the presence and concentration of persistent organochlorine pesticides (OCPs) residues in cow milk from Ekiti State University Agricultural farm in Ado-Ekiti, Nigeria. The study was investigated in order to monitor consumer’s exposure to these chemicals pesticides. Methods: Qualitative identification and quantification evaluation of the extracted pesticides after clean-up on silica gel were done with a Gas Chromatography coupled with an Electron Capture Detector (GC-ECD). Results: The results revealed the presence of 11 OCPs residues in the milk samples, with concentration range of 0.001 - 0.189 mg/l, while α-BHC, endrin, endrin aldehyde, endosulfan II, endosulfan sulphate and methoxychlor were not detected. The analysis of variance revealed no significant variation in the levels of all the analysed pesticides except dieldrin. Conclusion: The hazard indices (HIs) were significantly lower than 1 with the range of 0.00063 - 0.107, indicating no potential health risk.

关键词： Cow Milk Organochlorine Pesticides Gas Chromatography Risk Assessment

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Multi-Residue Levels of Persistent Organochlorine Pesticides in Edible Vegetables: A Human Health Risk Assessment

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Journal of Agricultural Chemistry and Environment 2018年第4期7卷 143-152页

作者： Samuel Oluyemi Adefemi Samuel Sunday Asaolu olayinka abidemi ibigbami Joshua Iseoluwa Orege Mayowa Akeem Azeez Abiodun Folasade Akinsola Department of Chemistry Ekiti State University Ado-Ekiti Nigeria

Background: This study evaluates the quantitative assessment of persistent organochorine pesticide (OCPs) residues in vegetables (Senecio biafrae) from four selected cocoa plantations in Ekiti State, Nigeria. Methods: The pesticides were extracted from the vegetable samples by using USEPA 3500C method and later clean-up on activated silica gel. The pesticides residues in the samples were determined using Gas Chromatography coupled with Electron Capture Detector (GC-ECD). Results: The results showed that the analyzed samples were contaminated with ten OCPs. The mean OCPs concentration ranged from ND—0.399 mg/kg to ND—0.379 mg/kg during the wet and dry seasons respectively. α-BHC, β-BHC, p, p’-DDE, dieldrin, endrin, endosulfan sulphate and methoxychlor were not detected in the samples. Pesticides such as aldrin, endosulfan II, endrin aldehyde and heptachlor slightly exceeded their maximum residue limit. Conclusion: The hazard indices (HI) of heptachlor, endosulfan I, endosulfan II, aldrin, heptachlor-epoxide and p, p’-DDT exceeded 1 and thus pose likely potential non-carcinogenic health risk.

关键词： Organochlorine Pesticides Vegetables Risk Residues Gas Chromatography

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