Abstract:
The study was conducted to analyze seven organophosphorus (OP) and pesticide
residues in two common vegetables (eggplant and cucumber) collected from five
different areas (Ambari Bazar, Bahadur Bazar, Laxmitola Bazar, Fulbari Bazar and
Parbatipur Natun Bazar) of Dinajpur district from September 2017 to March 2018.
The collected samples were analyzed using Quick, Easy, Cheap, Effective, Rugged
and Safe (QuEChERS) extraction technique and Gas Chromatography (GC) coupled
with Flame Thermionic Detector (FTD) for the determination of pesticide residues
in 40 samples of eggplant and 40 samples of cucumber. Among the analyzed 40
samples of eggplant, 5 samples (12.5%) contained residues of diazinon. All of the
contaminated samples contained residue above the maximum residue limits (MRLs).
In case of cucumber, among the 40 analyzed samples, 4 samples (10%) contained
residues of chlorpyrifos, quinalphos, acephate, dimethoate and fenitrothion, where 1
sample contained multiple pesticide residues. Among these 4 samples, 2 samples
contained residues above MRLs and 2 samples contained residues below MRLs
diazinon were detected in the contaminated eggplant sample, while chlorpyrifos,
quinalphos, acephate, dimethoate and fenitrothion were detected in the contaminated
cucumber sample. This study reflects the over all scenario of pesticide contamination
in vegetables especially in eggplant and cucumber available in the retail markets of
Dinajpur district, which will help the consumer to be aware of their health and safety.
Description:
A Thesis
Submitted to the Department of Agricultural Chemistry
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, 2018
