Hexabromocyclododecane (HBCD) and tetrabromobisphenol A (TBBPA) in riverine and estuarine sediments of the Pearl River Delta in southern China, with emphasis on spatial variability in diastereoisomer- and enantiomer-specific distribution of HBCD

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• 作者：An-Hong Feng^a ; ^b ; She-Jun Chen^a ; ^{chenshejun@gig.ac.cn} ; Man-Ying Chen^a ; ^b ; Ming-Jing He^a ; ^b ; Xiao-Jun Luo^a ; Bi-Xian Mai^a
• 关键词：Hexabromocyclododecane (HBCD) ; Tetrabromobisphenol A (TBBPA) ; Surface sediment ; Pearl River Delta ; Diastereoisomer composition ; Enantiomeric fraction
• 刊名：Marine Pollution Bulletin
• 出版年：2012
• 出版时间：May, 2012
• 年：2012
• 卷：64
• 期：5
• 页码：919-925
• 全文大小：1K

文摘

Hexabromocyclododecane (HBCD) and tetrabromobisphenol A (TBBPA) were measured in surface sediments in the Pearl River Delta, southern China. The concentrations ranged from 0.06 to 304 ng/g dry weight for TBBPA and from 0.03 to 31.6 ng/g for total HBCD. The correlations between the TBBPA and HBCD concentrations were significant in rivers (Dongjiang, Zhujiang, Beijiang, and Dayanhe Rivers) with local input sources but not significant in the Xijiang River and Pearl River Estuary without local sources. HBCD was dominated by ¦Ã-HBCD (averaged 52.5-75.0 % ), whereas ¦Á-HBCD contributions were relatively high in sediments from the urban areas. The enantiomeric fractions of ¦Ã-HBCD in the sediments (averaged from 0.431 ¡À 0.035 to 0.479 ¡À 0.010) differed significantly from that in HBCD technical product except for samples from the e-waste area (Dayanhe River, 0.488 ¡À 0.091). This suggests that enantioselective biotransformation of HBCD occurs in the aquatic environment in this region.