Surface sediment properties and heavy metal pollution assessment in the Shallow Sea Wetland of the Liaodong Bay, China.
Surface sediment properties and heavy metal pollution assessment in the Shallow Sea Wetland of the Liaodong Bay, China.
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DOI：
10.1016/j.marpolbul.2017.05.051
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发表时间：
2017-07
影响因子：
5.8
通讯作者：
Jin Wang;S. Ye;E. Laws;Hongming Yuan;Xigui Ding;Guangming Zhao
中科院分区：
文献类型：
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作者：
Jin Wang;S. Ye;E. Laws;Hongming Yuan;Xigui Ding;Guangming Zhao
辽东湾是我国东北部的一个半封闭海湾，受五条河流的影响。对辽东湾浅海湿地100个表层沉积物样品的粒度、有机碳和重金属含量进行了分析。重金属含量范围为2.32-17 μg/g（As），0.025-1.03 μg/g（Cd），18.9-131 μg/g（Cr），4.6-36.1 μg/g（Cu），0.012-0.29 μg/g（Hg），13.7-33.9 μg/g（Pb），17.4-159 μg/g（Zn）。污染评估显示，一些站点中度到高度污染的砷，镉和汞。小凌河河口污染严重，其他河口沉积物较粗，重金属含量较低。重金属在土壤中的分布与Corg值和粒度密切相关。
Liaodong Bay, a semi-enclosed bay located in northeastern China, is impacted by the discharges of five rivers. We analyzed 100 surface sediment samples from the Shallow Sea Wetland of Liaodong Bay for grain size and concentrations of organic carbon (Corg) and heavy metals. The ranges of the heavy metal concentrations were 2.32–17 μg/g (As), 0.025–1.03 μg/g (Cd), 18.9–131 μg/g (Cr), 4.6–36.1 μg/g (Cu), 0.012–0.29 μg/g (Hg), 13.7–33.9 μg/g (Pb), and 17.4–159 μg/g (Zn). Pollution assessments revealed that some stations were moderately to highly polluted with As, Cd, and Hg. Severe pollution was apparent in the Xiaoling River estuary; lower concentrations of heavy metals were observed in other river mouths, where the sediments were more coarse. The distributions of the heavy metals were closely associated with Corg and grain size.