Short chain chlorinated paraffins in mollusks from coastal waters in the Chinese Bohai Sea.
Short chain chlorinated paraffins in mollusks from coastal waters in the Chinese Bohai Sea.
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DOI：
10.1021/es203839h
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发表时间：
2012-05
影响因子：
11.4
通讯作者：
Bo Yuan;Thanh Wang;N. Zhu;Kegang Zhang;Lixi Zeng;Jianjie Fu;Yawei Wang;G. Jiang
中科院分区：
文献类型：
--
作者：
Bo Yuan;Thanh Wang;N. Zhu;Kegang Zhang;Lixi Zeng;Jianjie Fu;Yawei Wang;G. Jiang
短链氯化石蜡（SCCPs）作为斯德哥尔摩公约中一类极为复杂的持久性有机污染物（POPs）候选物，近年来受到广泛关注。本研究于2009年采集了9种双壳类动物和2种腹足类动物，以评估影响短链氯化石蜡在中国渤海软体动物体内生物累积的空间分布和潜在因素。软体动物体内∑短链氯化石蜡的浓度范围为64.9-5510纳克/克（干重），平均氯含量为61.1%。C（10）和C（11）是短链氯化石蜡的主要同系物，分别占∑短链氯化石蜡的29.7%和34.9%。六氯和七氯取代基是主要的同系物组。沙生蛤（Mya arenaria）、四角蛤蜊（Mactra veneriformis）和大连湾牡蛎（Crassostrea talienwhanensis）（牡蛎，Ost）的短链氯化石蜡平均浓度高于其他物种，这意味着这些双壳贝类可作为哨兵，指示该沿海地区的短链氯化石蜡污染情况。发现短链氯化石蜡浓度与软体动物的脂质含量之间存在显著的正线性关系，而脂质标准化的短链氯化石蜡浓度与营养级呈负线性关系，这意味着短链氯化石蜡在该区域的软体动物中未显示出生物放大作用。
As an extremely complex group of persistent organic pollutants (POPs) candidates in the Stockholm Convention, short chain chlorinated paraffins (SCCPs) have been of extensive concern in recent years. In this study, nine bivalve and two gastropod species were collected in 2009 to evaluate the spatial distributions and potential factors influencing the bioaccumulation of SCCPs in mollusks in the Chinese Bohai Sea. The concentrations of ∑ SCCPs in the mollusks were in the range 64.9-5510 ng/g (dry weight) with an average chlorine content of 61.1%. C(10) and C(11) were the predominant homologue groups of SCCPs, which accounted for about 29.7% and 34.9% of ∑ SCCPs, respectively. Six and seven chlorinated substituents were the main congener groups. Mya arenaria (Mya), Mactra veneriformis (Mac), and Crassostrea talienwhanensis (Oyster, Ost) had higher average concentrations of SCCPs than other species, implying that these bivalves could be used as sentinels to indicate SCCPs contamination in this coastal region. A significant positive linear relationship was found between SCCP concentrations and lipid content of the mollusks, whereas the lipid-normalized SCCP concentrations were negatively linear-related to the trophic levels (TL), which implied that SCCPs did not show biomagnification in mollusks in this region.