期刊
ENVIRONMENTAL POLLUTION
卷 171, 期 -, 页码 191-198出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2012.07.026
关键词
HBCD; Geographical distribution; Biomagnification; Passerine birds; South China
资金
- Chinese Academy of Sciences [KZCX2-EW-QN 105]
- National Basic Research Program of China [2009CB4216604]
- National Science Foundation of China [20890112, 21077105, 85290270, 41173109]
- Guangdong Natural Science Foundation
- Hundred Talent Program of the Chinese Academy of Science
Diastereoisomers and enantiomers of hexabromocyclododecane (HBCD) were determined in muscle and stomach contents of three terrestrial passerine birds from e-waste, urban and rural locations in South China. The highest HBCD concentration was found at the urban site, followed by the e-waste site, suggesting that HBCD was linked to urbanization and industrialization, as well as e-waste recycling activities. Trophic magnification for alpha-HBCD was observed in the terrestrial food chain. Diastereisomeric pattern in birds showed the predominance of alpha-isomer, with a minor contribution of gamma-isomer. The enantiomeric analysis revealed a preferential enrichment of (-)-alpha-HBCD and (+)-gamma-HBCD. The similarity in enantiomeric fractions of HBCD isomers between muscle and stomach contents of birds suggested that dietary uptake may be responsible for the observed nonracemic distribution of HBCD isomers in the studied birds although in vivo enantioselective biotic processes cannot be ruled out. (C) 2012 Elsevier Ltd. All rights reserved.
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