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Communication in Physical Sciences 2020, 5(4): 533-532
Received 20 June 2020/Accepted 19 July 2020
Tomato is a vegetable that is eaten all over the world including Nigeria and in order to control infestation by pests, most tomato farmers use pesticides that may impart harmful effect on human. Consequently, this study was designed to assess pesticides residues and associated health risks in tomatoes sold in Lagos state. The result obtained indicated the presence of alpha and delta lindane, heptachlor, heptachlor epoxide, endrin, endosulfan, endosulfan sulphate and ether. Mean concentrations (mg/kg) and estimated daily intake (EDI) (mg/kg/day) of the pesticide residues were in the range of 0.0042 to 0.336 mk/kg and 7.5E- 6 to 2.3E-4 mg/kg/day respectively. The hazard quotient (HQ) ranged from 0.00024 to 17.77, while the hazard indices range from 1.00 to 18.92. The incremental lifetime cancer risk (ILCR) for the pesticide residues ranged from 5E- 5 to 2.1E- 3. The mean concentration of most of the pesticide residues in the tomato samples were above their maximum residue limit (MRL) while some had estimated daily intake (EDI) above their established acceptable daily intake (ADI) and hazard quotients (HQ) above their safe value. The hazard indices (HI) and Incremental lifetime cancer risk (ILCR) for the pesticide residues were above their safe values. The results and findings of the study indicate that there is need for continuous monitoring of pesticides residues in tomatoes and education of farmers on the uses of pesticides.
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