Journal
ENVIRONMENTAL POLLUTION
Volume 181, Issue -, Pages 7-13Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2013.05.050
Keywords
Hexabromocyclododecane; Fish; Tibetan Plateau; Trophic level; Lipid content
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Funding
- National Natural Science Foundation [21222702, 21177149]
- National Basic Research Program of China [2009CB421605]
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Hexabromocyclododecanes (HBCDs) has just been listed into Stockholm Convention as a persistent organic pollutant recently. This paper studied the HBCDs in 79 wild fish from high mountain lakes and rivers of the Tibetan Plateau. The Sigma HBCDs in fish muscles ranged from non detectable levels to 13.7 ng/g lipid weight (lw) (mean value of 2.12 ng/g lw) with a high detection frequency of 65.8%. alpha-HBCD dominated among the isomers and accounted for 78.2% of the total burden. Concentrations of Sigma HBCDs in the fish were significantly correlated with the lipid content, A decreasing trend was observed between alpha-HBCD and trophic level. Positive correlation was also noted between the HBCD levels in fish from lakes and the annual precipitation, and this implied the long-range atmospheric transport of HBCDs to the Tibet Plateau. This was the first work to widely explore HBCDs contamination in the aquatic ecosystems of the Tibetan Plateau. (C) 2013 Elsevier Ltd. All rights reserved.
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