Abstract:
The study was conducted to analyze pesticide residues in two common vegetables
(country bean and yard long bean) collected from five different areas (Raja Bazaar,
Gabtali Bazar, Sonatola Bazar, Mohasthangor Bazar and Shibganj Bazar) of Bogura
District from November, 2017 to February, 2018. The collected samples were carried
to the Pesticide Analytical Laboratory, Entomology Division of Bangladesh
Agricultural Research Institute (BARI), Gazipur. 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 35 samples of country
bean and 35 samples of yard long bean. Among the 35 analyzed samples of country
bean, 4 samples (11% of the total number of samples) contained pesticide residues of
Quinalphos. Among these 4 samples, 2 had residues above the Maximum Residue
Limit (MRL) and 2 had residues below the Maximum Residue Limit (MRL) set by
European Commission. Similarly out of 35 samples of yard long bean, 5 samples
(14% of the total number of samples) contained pesticide residues of Chlorpyrifos,
Dimethoate and Quinalphos. Among this 5 samples, 2 had residues above the
Maximum Residue Limit (MRL) and 2 had residues below the Maximum Residue
Limit (MRL) set by European Commission and 1 sample contained two pesticide
residues such as Dimethoate and Chlorpyrifos. The level of detected Dimethoate
residue was above the Maximum Residue Limit (MRL), while the level of detected
Chlorpyrifos residue was below the Maximum Residue Limit (MRL) in this
contaminated sample. Quinalphos and Dimethoate were detected in most of the
contaminated country bean and yard long bean samples, while Chlorpyrifos was also
detected. This study reflects the overall scenario of pesticide contamination in
vegetables especially in country bean and yard long bean available in the local
markets of Bogura District, which will help the consumer to be aware of their health
and safety.
