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

• 作者: Abiodun Folasade Akinsola Joshua Iseoluwa Orege Mayowa Akeem Azeez Olayinka Abidemi Ibigbami Samuel Oluyemi Adefemi Samuel Sunday Asaolu
• 来源期刊: 农业化学和环境(英文)
• 学科: 医学
• 关键词: ORGANOCHLORINE PESTICIDES VEGETABLES Risk Residues Gas Chromatography
• 年，卷（期）: 2018,（4）
• 页码范围: 143-152
• 页数: 10页
• 分类号: R73

摘要

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.