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Composition and source of butyltins in sediments of Kaohsiung Harbor, Taiwan

机译:台湾高雄港沉积物中丁基锡的组成和来源

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Fifty-eight sediment samples were collected from the Kaohsiung Harbor (Taiwan) for analyses of monobutyltin (MBT), dibutyltin (DBT) and tributyltin (TBT), using gas chromatography/flame photometric detector (GC/FPD). The concentration of total butyltins (Sigma BTs), sum of MBT, DBT, and TBT, varied from 3.9 to 158.5 ng Sn/g dw in sediment samples with TBT being the major component of the sediment samples, except for the vicinity of the Love River mouth where MBT was the most abundant BT compound (a proportion of over 57%). Based on the BTs concentration, distribution, composition and correlations, the sources of BTs found in harbor sediments are shipping activities, and TBT is the main pollutant; the estuary (i.e. Love River) has been the anthropogenic source of MET from upstream inputs. Influences of TBT on aquatic organisms are evaluated using the toxicity guidelines proposed by the US EPA (US Environmental Protection Agency) and the ACCI (assessment class criterion for imposex) proposed by OSPAR (Oslo and Paris Commission). The evaluation shows that the TBT contained in the sediment at Kaohsiung Harbor is likely to have a negative influence at ACCI class C because gastropods present imposex and TBT levels are above ecotoxicological assessment criteria (EAC) limits. (C) 2014 Elsevier Ltd. All rights reserved.
机译:使用气相色谱/火焰光度检测器(GC / FPD)从台湾高雄港(台湾)收集了58个沉积物样品,用于分析单丁基锡(MBT),二丁基锡(DBT)和三丁基锡(TBT)。沉积物样品中总丁基锡(Sigma BTs)的浓度,MBT,DBT和TBT的总和在3.9至158.5 ng Sn / g dw之间变化,除了Love附近,TBT是沉积物样品的主要成分MBT是最丰富的BT化合物的河口(比例超过57%)。根据BTs的浓度,分布,组成和相关性,在港口沉积物中发现的BTs的来源是航运活动,而TBT是主要污染物。河口(即洛夫河)一直是上游输入的MET的人为来源。使用美国EPA(美国环境保护局)提出的毒性指南和OSPAR(奥斯陆和巴黎委员会)提出的ACCI(胶乳的评定等级标准)评估了TBT对水生生物的影响。该评估表明,高雄港沉积物中所含的三丁基锡化合物可能会对ACCI C类产生负面影响,因为存在的腹足动物有危害性,三丁基锡化合物的含量超过了生态毒理学评估标准(EAC)的限值。 (C)2014 Elsevier Ltd.保留所有权利。

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