Tributyltin compounds in mussels, oysters and sediments of Chinhae Bay, Korea
Tributyltin compounds in mussels, oysters and sediments of Chinhae Bay, Korea
复制标题
韩国镇海湾的贻贝、牡蛎和沉积物中的三丁基锡化合物
DOI：
10.1016/s0141-1136(98)00023-3
复制
发表时间：
1999
影响因子：
3.3
通讯作者：
Kwang
中科院分区：
文献类型：
--
作者：
H. Hwang;J. Oh;S. Kahng;Kwang
为了研究韩国东南部镇海湾有机锡化合物环境水平的历史和现状，对贻贝（贻贝）、牡蛎（牡蛎）和沉积物芯进行了三丁基锡（TBT）化合物分析。牡蛎中的三丁基锡化合物浓度（平均值：0.25微克三丁基锡化合物/克干重）高于贻贝（平均值：0.20微克三丁基锡化合物/克干重）。三丁基锡化合物的主要来源是内湾，在靠近港口的地点观测到最高的三丁基锡化合物浓度，分别为0.50 μg TBT-Sn/g（贻贝）和0.74 μg TBT-Sn/g（牡蛎）。TBT的浓度随距离的增加而急剧下降，从内湾到外湾，有很少的TBT在外湾。据观察，这一距离与牡蛎和贻贝组织中的三丁基锡化合物含量之间存在着显著的相关性。三丁基锡化合物在沉积物中的浓度和百分比随深度的增加而降低。三丁基锡化合物和二丁基锡化合物在沉积物中的半衰期分别为6.9年和11.6年。贻贝中的三丁基锡化合物浓度比沉积物中的浓度高4-7倍。
To study the historical and current status of the environmental levels of organotin compounds in Chinhae Bay in southeast Korea, mussels (Mytilus edulis galloprovincialis), oysters (Crassostrea gigas) and sediment cores were analysed for tributyltin (TBT) compounds. TBT concentrations were higher in oysters (mean: 0.25 μg TBT-Sn/g dry wt) than in mussels (mean: 0.20 μg TBT-Sn/g dry wt). The major sources of TBT are in the inner bay, and the highest TBT concentrations of 0.50 μg TBT-Sn/g (mussels) and 0.74 μg TBT-Sn/g (oysters) were observed at the site adjacent to the port. Concentrations of TBT decreased sharply with distance from the inner bay toward the outer bay and there was little TBT in the outer bay. A significant correlation was observed between this distance and the tissue TBT content of oysters and mussels. The concentration and percentages of TBT in sediment cores decreased with depth as a result of debutylation. Half-lives of TBT and dibutyltin (DBT) in sediments were 6.9 and 11.6 y, respectively. The TBT concentrations in mussels were higher than those in sediments by a factor of 4–7.