Abstract:
The study was conducted to analyze difenoconazole, dimethoate, chlorantraniliprole, 
pymetrozine residues on brinjal fruits collected from different fields and markets of 
Bangladesh during November 2021. The collected samples were analyzed using 
modified Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) extraction 
technique and LC-MS/MS for the determination of pesticide residues in 50 field 
samples and 50 market samples of brinjal. Among the 50 analyzed field samples, 
pymetrozine was detected in 4 samples (8%), dimethaote was detected in 10 samples 
(20%), difenoconazole was detected in 6 samples (12%) and chlorantraniliprole was 
detected in 7 samples (14%). In 50 market samples, pymetrozine was detected in 2 
samples (4%), dimethaote was detected in 5 samples (10%), difenoconazole was 
detected in 4 samples (8%) and chlorantraniliprole was detected in 8 samples (16%). 
All of the samples detected with pymetrozine, dimethaote, difenoconazole residues 
has residue above Maximum Residue Level (MRL).
 
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