Assessment of heavy metal contamination in surface sediments of the west Guangdong coastal region, China
Assessment of heavy metal contamination in surface sediments of the west Guangdong coastal region, China
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粤西沿海地区表层沉积物重金属污染评价
DOI：
10.1016/j.marpolbul.2016.04.057
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发表时间：
2016
影响因子：
5.8
通讯作者：
Wang Jin
中科院分区：
文献类型：
--
作者：
Zhao Guangming;Lu Qingyuan;Ye Siyuan;Yuan Hongming;Ding Xigui;Wang Jin
对2008年1月在粤西沿海采集的237个表层沉积物样品和1个柱状沉积物样品的重金属（As、Cd、Cr、Cu、Hg、Pb、Zn）、有机碳和粒度进行了分析，评价了其空间分布和污染状况。结果表明，沉积物中重金属含量范围为：As 8.33-39.49 mg/kg，Cd 0.1-1.49 mg/kg，Cr 33-108 mg/kg，Cu 11.5-78.8 mg/kg，Hg 0.04-0.26 mg/kg，Pb 21-73 mg/kg，Zn 56-248 mg/kg。重金属的富集与Corg和粒度密切相关。重金属富集因子和地积累指数均表明，研究区土壤中As、Cr、Cu、Pb未检出污染，Cd、Hg、Zn轻度至中度污染。但As、Cr、Cu已表现出一定的风险性。
Heavy metals (As, Cd, Cr, Cu, Hg, Pb, Zn), organic carbon and grain size of 237 surface sediment samples and one sediment core, taken from the west Guangdong coastal region in January 2008, were analyzed to evaluate the spatial distribution and pollution status. Results show that the ranges of the measured heavy metal concentrations in sediments are as follows: 8.33–39.49 mg/kg for As, 0.1–1.49 mg/kg for Cd, 33–108 mg/kg for Cr, 11.5–78.8 mg/kg for Cu, 0.04–0.26 mg/kg for Hg, 21–73 mg/kg for Pb, 56–248 mg/kg for Zn. The heavy metal enrichment is closely associated with Corg and grain size. Both the metal enrichment factor and geoaccumulation index indicate that there was no detected pollution on metals As, Cr, Cu, Pb in our study area and a slight to moderate contamination of Cd, Hg and Zn. However, As, Cr and Cu have showed a certain risk.