Organochlorine pesticide residues in ground water of Thiruvallur district, India |
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Authors: | R Jayashree N Vasudevan |
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Institution: | (1) Centre for Environmental Studies, Anna University, Chennai, 600025, Tamil Nadu, India |
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Abstract: | Modern agriculture practices reveal an increase in use of pesticides and fertilizers to meet the food demand of increasing
population which results in contamination of the environment. In India crop production increased to 100% but the cropping
area has increased marginally by 20%. Pesticides have played a major role in achieving the maximum crop production, but maximum
usage and accumulation of pesticide residues was highly detrimental to aquatic and other ecosystem. The present study was
chosen to know the level of organochlorines contamination in ground water of Thiruvallur district, Tamil Nadu, India. The
samples were highly contaminated with DDT, HCH, endosulfan and their derivatives. Among the HCH derivatives, Gamma HCH residues
was found maximum of 9.8 μg/l in Arumbakkam open wells. Concentrations of pp-DDT and op-DDT were 14.3 μg/l and 0.8 μg/l. The
maximum residue (15.9 μg/l) of endosulfan sulfate was recorded in Kandigai village bore well. The study showed that the ground
water samples were highly contaminated with organochlorine residues. |
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Keywords: | Organochlorine pesticides Ground water Thiruvallur district India |
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