Journal
ENVIRONMENTAL POLLUTION
Volume 204, Issue -, Pages 74-80Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2015.04.006
Keywords
Soil; Organochlorine pesticides; Distribution; India; Sources; Fugacity fractions
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Funding
- SRM University, Kattankulathur, India
- Chinese Academy of Sciences [KZCX2-YW-GJ02]
- Natural Scientific Foundation of China (NSFC) [41025020]
- Natural Environment Research Council [ceh010010] Funding Source: researchfish
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India is an agricultural country and organochlorine pesticides (OCPs) accounts for nearly three fourth of the annual pesticide consumption. Selected OCPs were therefore quantified in 81 soil samples along urban suburban rural transect from New Delhi and Agra in the north, Kolkata in the east, Mumbai and Goa in the west and Chennai and Bangalore in the southern part of India. Sigma OCPs ranges from 2 to 410 ng/g dry weight (Mean, 35) with dominance of endosulfan sulfate in the rural sites. Urban centers and suburbs reflects OCP usage for vector control. Lower winter temperature in New Delhi favored sitespecific deposition of most OCPs in soil. Volatilization of OCPs from soil occurred in the Indian cities having higher ambient temperature. Due to the compounded impact of past and ongoing usage of selected OCPs like DDT, a sporadic cycle of emission and re-emission from Indian soil is expected to continue for many more years to come. (C) 2015 Elsevier Ltd. All rights reserved.
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