Abstract

GC-MS ANALYSIS OF MULTICLASS PESTICIDE RESIDUES FOUND IN FARMLAND WATER OF HARYANA DISTRICTS

Sudeep Mishra, V. D. Deotale, M. A. Pande, M. K. Saini, M. K. Singh, S. Alam*, B. S. Sehrawat, L. K. Thakur and S. K. Raza

Abstract

Presence of pesticide residue in irrigation water is major problem in India. Only 10-15% of the pesticides reach the target and rest goes to the environment and shows cumulative effects with time. Pesticide may affect the pest population, nature of growth & production of crops. The present study was aimed to monitor irrigation water samples from various districts of Haryana over a period of two years. Samples were extracted for pesticides using Liquid-Liquid extraction. Extract was evaporated to dryness and reconstituted with n-hexane. Pesticides residues were determined qualitative and quantitatively using gas chromatography mass spectrometry (GCMS). Of total tested 112 numbers of water samples. 70 samples were found contaminated with pesticide residue among which 25 samples were found contaminated with multi-residue. Positive samples were found contaminated with Malathion, Chlorpyrifos, O P DDE, Pretilachlor, Butachlor, Atrazine and Trizophos with concentration range 0.044 -0.079 mg/kg, 0.01-0.10 mg/kg, 0.07 mg/kg, 0.01-17.09 mg/kg, 0.012-0.91 mg/kg, 0.012-0.91 mg/kg and 0.05-0.17 mg/kg respectively.

Keywords: Pesticide residue, Water, Liquid- Liquid extraction, GCMS.