Metal pollution status in Zhelin Bay surface sediments inferred from a sequential extraction technique, South China Sea

文献类型： 外文期刊

第一作者： Gu, Yang-Guang

作者： Gu, Yang-Guang;Lin, Qin;Jiang, Shi-Jun;Wang, Zhao-Hui;Gu, Yang-Guang;Lin, Qin;Gu, Yang-Guang;Lin, Qin

作者机构：

关键词： Metals;Chemical speciation;Sediment analysis;Ecological risk;Zhelin Bay

期刊名称：MARINE POLLUTION BULLETIN （ 影响因子：5.553； 五年影响因子：5.907 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Surface sediments collected from Zhelin Bay, the largest mariculture base of eastern Guangdong Province, were analyzed for total metal concentrations and chemical speciation. The results demonstrated that the average total concentration (mg/kg) ranges were 36.7-65.8 (Pb), 53.8-98.8 (Cr), 39.0-87.1 (Ni), 50.9-144.5 (Cu), and 175.0-251.2 (Zn), which were clearly higher with respect to their corresponding benchmark values. The predominant speciation of Pb was reducible and comprised a residual fraction, whereas a major portion (57.6-95.4%) of Cr, Ni, Cu, and Zn was strongly associated with the residual fractions. Taking as a whole, surface sediments of Zhelin Bay had a 21% probability of toxicity based on the mean effects range-median quotient.

分类号： X

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