DETERMINATION OF PESTICIDE RESIDUES IN CABBAGE AND BITTER GOURD COLLECTED FROM SOME RETAIL MARKETS OF DHAKA CITY

Abstract

The study was conducted to analyze four Organophosphorus (OP) and two Synthetic Pyrethroid (SP) pesticide residues in two common vegetables (cabbage and bitter (Purd) collected from live different areas (Rampura. Kawran l3azar. Taltola l3azar. Jatrahari and Mohammadpur Krishi Market) of' Dhaka ci1' from September 2016 to November 2016. The collected samples were analyzed using Quick. Easy, Cheap, ElThctive. Rugged and Safe (QuEChERS) extraction technique and Gas Chromatography (GC coupled with I-lame Thermionized Detector (FI'D) and Electron Capture Detector (ECD) for the determination of pesticide residues in 50 samples of cabbage and 50 samples of bitter gourd . Among the analyzed 50 samples of cabbage. 13 samples (26%) contained residues of single compound namely ch!orpvrilbs. cypermethrin, diazinon and dimethoate. where 1 sample contained two pesticide residues that is diazinon and evpernicthrin. Out of' these 13 samples, 7 samples contained residue above the maximum residue limits (MRLs) and 5 samples below the MRLs. In 50 samples of bitter gourd. 12 samples (24%) contained residues of' single compound namely cypermcthrin, dimcthoate. diazinon and ehlorpvri lbs. where 3 samples contained two pesticide residues. Among these 12 samples. 7 samples contained residue above the MRLs and 2 samples were below the MRLs. Diazinon and cvpermethrin were detected in most of the contaminated cabbage and bitter gourd sample. while chlorpyrilbs and dimethoate were also detected. This study reflects the overall scenario of pesticide contamination in vegetables especially in cabbage and bitter gourd available in the retail markets of' Dhaka city, which will help the consumer to be aware of their health and salèty.