1. a Pesticide Residue Laboratory, Department of Agricultural Chemicals , Bidhan Chandra Krishi Viswavidyalaya , West Bengal , India
2. b Department of Chemistry , University of Kalyani , West Bengal , India
3. c Chemical Laboratory, Damodar Valley Corporation , Chandrapura Thermal Power Station (Unit # 7&8), Chandrapura – 852 303, Bokaro , Jharkhand , India