Journal
CHEMOSPHERE
Volume 119, Issue -, Pages 1134-1140Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2014.09.054
Keywords
Organochlorine pesticides; Polycyclic aromatic hydrocarbons; Poyang Lake; Spatial distribution; Source identification
Categories
Funding
- National Key Basic Research and Development Program (973 Program) [2012CB417005]
- Natural Science Foundation of Jiangsu Province, China [BK201241544]
- National Science Foundation of China [41201535, 41373017]
- National Basic Research Program of China [2012FY111800-03]
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The fate of polycyclic hydrocarbons (PAHs) and organochlorine pesticides (OCPs) in the water columns from Poyang Lake was studied. The total concentrations of OCPs and PAHs were 19.10-111.78 ng L-1 and 5.56-266.1 ng L-1, respectively. Among OCPs, endosulfans, chlordanes, and HCHs accounted for 21.96%, 24,6% and 24.65%, and were the predominant pollutants. Results suggested that the main sources of DDTs were residue from technical DDTs and dicofol, as well as antifouling paints for ships, while for HCHs, the main sources included long-distance transmission, agriculture activities and the combination of industrial products with separate lindane in use. As for PAHs, the predominance of lower molecular weight congeners demonstrated that petroleum and the combustion products of fuel oil, as well as other pyrogenic sources, contributed to the main input of PAHs in the Poyang region. The vehicle emissions were mostly from diesel engines. Moreover, HCH, DDT and BaP concentrations in water of Poyang Lake were all below the threshold values. Crown Copyright (C) 2014 Published by Elsevier Ltd. All rights reserved.
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