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Abstract
The study was conducted to monitor the concentration of pesticide residues in three staple vegetables (tomato, cabbage, lettuce) collected from 12 prefectures belonging to 4 agro-ecological regions of Togo. A total of 150 samples of ripe tomato, cabbage and lettuce were collected from the study areas and analyzed for 20 OCPs (organochlorine pesticides) residues, which can be grouped into DDTs, Drins, Heptachlors, Chlordanes and HCHs. The data revealed that 100% of the analyzed vegetable samples were contaminated by one or more pesticide residues; 83.32% and 100% were below the maximum residue limits (MRLs) set par European Union and FAO/WHO respectively whereas 16.68% were above the EU (MRLs) adopted values. Overall, cabbage contained the highest number of samples with pesticide residues above the MRLs followed by tomato, whilst none of lettuce samples contained pesticide residues above the MRLs. It is therefore proposed to perform continuous monitoring studies of pesticide residues in vegetables cultivated in Togo.
Highlights
Pesticides are part of the control means available to farmers to combat insect pests
Since the 1950s, the org/10.4236/ajac.2016.74031Organochlorine pesticides (OCPs) have become of much concern for human health and environment, and the Stockholm Convention on persistent organic pollutants (POPs) [2] listed most of them as banned (Annex A POPs) or at least severely restricted chemicals (Annex B POPs)
All concentrations of OCPs are expressed in ng∙g−1 on a whole basis
Summary
Pesticides are part of the control means available to farmers to combat insect pests. It is estimated that as much as 45% of the world’s crop is destroyed by insect pests and plant diseases. Organochlorine pesticides (OCPs) have been commonly used in agriculture in the past. Since the 1950s, the OCPs have become of much concern for human health and environment, and the Stockholm Convention on persistent organic pollutants (POPs) [2] listed most of them as banned (Annex A POPs) or at least severely restricted chemicals (Annex B POPs). Exposure to OCPs has been associated with human health risk of arthritis, skin disease, bone disorder, endocrine disruption, developmental abnormalities, reproduction failure, cancer and nerve disorder. Food is the major pathway for exposure to OCPs [5] [6]
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