Heavy metal concentrations in molluscs from the Atlantic coast of southern Spain.
Heavy metal concentrations in molluscs from the Atlantic coast of southern Spain.
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DOI：
10.1016/j.chemosphere.2004.11.089
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发表时间：
2005-05
期刊：
影响因子：
8.8
通讯作者：
J. Usero;J. Morillo;I. Gracia
中科院分区：
文献类型：
--
作者：
J. Usero;J. Morillo;I. Gracia
在西班牙南部大西洋沿岸沿着两种最丰富的双壳类软体动物（Donax trunculus和Chamelea gallina）和它们生活的沉积物中测定了微量金属。结果表明，韦尔瓦河口附近的区域是沉积物和两种双壳类中金属浓度最高的区域。这并不奇怪，因为韦尔瓦河口是廷托河和奥迪尔河的河口，这两条河是欧洲所有河流中金属污染最严重的河流之一。这两种双壳贝类的组织中含有不同数量的金属。Cr、Cu、Pb、Zn、As和Hg在D. trunculus显著高于C. gallina;而C.鸡中Ni和Cd含量较高。在这两个物种中最丰富的元素是铜和锌，而汞显示最低值。Cu、Pb、Zn、Hg含量在D. trunculus和C. gallina相对于其在表层沉积物中的浓度。
Trace metals were determined in the two most abundant species of bivalve molluscs along the Atlantic coast of southern Spain (Donax trunculus and Chamelea gallina) and in the sediments where they live. The results show that the area near the mouth of the Huelva estuary is where the highest metal concentrations are found in sediments and in the two bivalve species. This is not surprising, considering that the Huelva estuary is the mouth of the Tinto and Odiel rivers, which have one of the highest levels of metal pollution of all the rivers of Europe. The two species of bivalves have different amounts of metals in their tissues. The concentrations of Cr, Cu, Pb, Zn, As and Hg in D. trunculus were significantly higher (p<0.05) than in C. gallina; however, C. gallina contained more Ni and Cd. In both species the most abundant elements were Cu and Zn, while Hg showed the lowest values. There is a significant correlation (p<0.05) for concentrations of Cu, Pb, Zn and Hg in D. trunculus and C. gallina relative to their concentrations in surface sediments.