Persistent Organochlorine Pesticide Residues in Soil and Surface Water of Northern Indo-Gangetic Alluvial Plains |
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Authors: | Kunwar P Singh Amrita Malik Sarita Sinha |
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Institution: | (1) Environmental Chemistry Section, Industrial Toxicology Research Centre, Post Box 80, Mahatma Gandhi Marg, Lucknow, 226 001, (India);(2) National Botanical Research Institute, Lucknow, (India) |
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Abstract: | This study reports the concentration levels and distribution pattern of the organochlorine pesticide (OCPs) residues in the
soil and surface water samples collected from the northern Indo-Gangetic alluvial plains. A total of 31 soil and 23 surface
water samples were collected from the study region in Unnao district covering an area of 2150 km2 and analyzed for aldrin, dieldrin, endrin, HCB, HCH isomers, DDT isomers/metabolites, endosulfan isomers (α and β), endosulfan
sulfate, heptachlor and its metabolites, α-chlordane, γ-chlordane and methoxychlor. In both the soil and surface water samples
β- and δ-isomers of HCH were detected most frequently, whereas, methoxychlor was the least detected pesticide. The results
showed contamination of soil and surface water of the region with several persistent organic pesticides. The total OCPs level
ranged from 0.36–104.50 ng g–1 and 2.63–3.72 μg L–1 in soil and surface water samples, respectively. |
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Keywords: | Alluvial Distribution Indo-Gangetic Organochlorine pesticides residues Plains Soil Surface water |
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