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.
Description:
A Thesis
Submitted to the Faculty of Agriculture.
Sher-e-Bangla Agricultural University. Dhaka,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
AGRICULTURAL CHEMISTRY
SEMESTER: JANUARY-JUNE, 2016
