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Assessment of organochlorine pesticide (OCPs) levels in vegetables irrigated from wastewater was carried out in agricultural fields of Malir River, Karachi. Tomatoes, Brinjal, Gourd, Okra and Spinach are the popular and extensively grown vegetables in this region and therefore selected for the present research. To assess levels of OCPs, 45 samples of aforementioned vegetables were collected and performed the laboratory analysis on cleaned samples extracts on a Gas Chromatography Electron Capture Detector (GC-ECD). DDT, HCH and Endosulfan were analyzed in the samples, revealed that all the vegetables were contaminated with these obsolete pesticides in the study area. Endosulfan and HCH were found highest in Gourd samples i.e. 1.17 and 0.72 µg/kg but DDT was maximum in Brinjal (2.53 µg/kg). However, the lowest HCH levels were found in Brinjal i.e. 0.06 µg/kg, Endosulfan in Tomato i.e. 0.04 µg/kg and DDT in Okra i.e. 0.09 µg/kg. From the present study, it can be concluded that indiscriminate and extensive use of OCPs causes serious threats to public health quality that feed on vegetables grown in Karachi.
Rabia Majeed, Muhammad Azhar Khan, Syeda Urooj Fatima, Moazzam Ali Khan , S. Shahid Shaukat. (2020) OCCURRENCE OF ORGANOCHLORINE PESTICIDE (OCPS) RESIDUES IN FARM VEGETABLES CULTIVATED THROUGH UNTREATED WASTEWATER IN KARACHI, , Volume 17, Issue 3.
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