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.
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