Levels and distribution of hexabromocyclododecane (HBCD) in environmental samples near manufacturing facilities in Laizhou Bay area, East China.
Levels and distribution of hexabromocyclododecane (HBCD) in environmental samples near manufacturing facilities in Laizhou Bay area, East China.
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DOI：
10.1039/c2em30231d
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发表时间：
2012-09
期刊：
影响因子：
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通讯作者：
Honghua Li;Qinghua Zhang;Pu Wang;Yingming Li;Jianxia Lv;Weihai Chen;D. Geng;Yawei Wang;
中科院分区：
文献类型：
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作者：
Honghua Li;Qinghua Zhang;Pu Wang;Yingming Li;Jianxia Lv;Weihai Chen;D. Geng;Yawei Wang;
在中国东部莱州湾地区六溴环十二烷（HBCD）生产设施周围共采集了55个样本，包括土壤、沉积物、植物（柏树、芦苇和水草）和水生物种。经测定，六溴环十二烷的浓度范围分别为0.88 - 6901纳克/克（干重）、2.93-1029纳克/克（干重）、8.88-160241纳克/克（干重）和7.09-815纳克/克（脂重）。在土壤中的六溴环十二烷浓度与距生产设施的距离之间观察到显著的负相关性（r（2）= 0.54，p = 0.006），当距离大于4公里时，浓度趋于恒定。生物累积系数的计算结果表明，六溴环十二烷可能在植物中累积。在水生物种中发现了六溴环十二烷非对映异构体的组织特异性生物累积。例如，在螃蟹的鳃中观察到六溴环十二烷的最高浓度（雌性为815纳克/克（-1）活体重，雄性为446纳克/克（-1）活体重）。除鳃外，α-六溴环十二烷更倾向于在精巢和卵巢中积累，而β-和γ-六溴环十二烷则更多地在肌肉中积累。在虾虎鱼的鱼卵和肌肉中也观察到类似的分布。
A total of 55 samples including soil, sediment, plants (cypress, reed and seepweed) and aquatic species were collected at locations around hexabromocyclododecane (HBCD) manufacturing facilities in Laizhou Bay area, East China. HBCD was determined at concentrations ranging between 0.88 and 6901 ng g(-1) dry weight (dw), 2.93-1029 ng g(-1) dw, 8.88-160241 ng g(-1) dw, and 7.09-815 ng g(-1) lipid weight (lw), respectively. Significant negative correlations (r(2) = 0.54, p = 0.006) were observed between HBCD concentrations in soils and the distance from the manufacturing facility, and the concentrations became constant when the distance was >4 km. The calculation results on the bioaccumulation factors (BAFs) suggested that HBCD may be accumulated in plants. Tissue-specific bioaccumulation of HBCD diastereoisomers was found in aquatic species. For example, in crabs the highest concentrations of HBCD (815 ng g(-1) lw for female and 446 ng g(-1) lw for male) were observed in the gill. Besides the gill, α-HBCD was more preferentially accumulated in the spermary and ovary, while β- and γ-HBCD were more accumulated in the muscle. A similar distribution was also observed in roe and muscle of goby fish.