期刊
ENVIRONMENTAL POLLUTION
卷 182, 期 -, 页码 283-290出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2013.07.032
关键词
Polychlorinated biphenyls; Air; India; FLEXPART; HYSPLIT; Toxicity equivalents
资金
- Chinese Academy of Sciences [KZCX2-YW-GJ02]
- Natural Scientific Foundation of China (NSFC) [41025020]
- Area of Excellence Scheme under the University Grants Committee of the Hong Kong Special Administrative Region, China [AoE/P-04/2004]
- Research Council of Norway [213577/F10]
- Depart of Science and Technology, Government of India [SR/FTP/EE-44/2012]
- Natural Environment Research Council [ceh010010] Funding Source: researchfish
- Grants-in-Aid for Scientific Research [25257403] Funding Source: KAKEN
Atmospheric concentration of Polychlorinated biphenyls (PCBs) were measured on diurnal basis by active air sampling during Dec 2006 to Feb 2007 in seven major cities from the northern (New Delhi and Agra), eastern (Kolkata), western (Mumbai and Goa) and southern (Chennai and Bangalore) parts of India. Average concentration of Sigma(25)PCBs in the Indian atmosphere was 4460 (+/-2200) pg/m(-3) with a dominance of congeners with 4-7 chlorine atoms. Model results (HYSPLIT, FLEXPART) indicate that the source areas are likely confined to local or regional proximity. Results from the FLEXPART model show that existing emission inventories cannot explain the high concentrations observed for PCB-28. Electronic waste, ship breaking activities and dumped solid waste are attributed as the possible sources of PCBs in India. Sigma 25PCB concentrations for each city showed significant linear correlation with Toxicity equivalence (TEQ) and Neurotoxic equivalence (NEQ) values. (C) 2013 Elsevier Ltd. All rights reserved.
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