Distribution, Multi-Index Assessment, and Sources of Heavy Metals in Surface Sediments of Zhelin Bay, a Typical Mariculture Area in Southern China

文献类型： 外文期刊

第一作者： Han, Yan-Jie

作者： Han, Yan-Jie;Gu, Yang-Guang;Han, Yan-Jie;Liang, Rui-Ze;Li, Hai-Song;Gu, Yang-Guang;Man, Xiang-Tian;Liang, Rui-Ze;Li, Hai-Song;Gu, Yang-Guang;Jiang, Shi-Jun;Jiang, Shi-Jun;Man, Xiang-Tian

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关键词： heavy metals; sediments; risk assessment; contamination; Zhelin Bay

期刊名称：TOXICS （ 影响因子：4.6； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年 11 卷 2 期

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收录情况： SCI

摘要： The occurrence, multi-index assessment, and sources of heavy metals in surface sediments of Zhelin Bay were investigated. Average heavy metal concentrations (mg/kg) were 81.89 (Cr), 770.76 (Mn), 16.81 (Co), 62.25 (Ni), 96.30 (Cu), 162.04 (Zn), and 73.40 (Pb), with the concentrations of studied seven heavy metals being significantly higher than their corresponding background values. Geo-accumulation index (I-geo) and pollution load index (PLI) were implemented to assess degree of heavy metal contamination. The I-geo and PLI indicated that Cr, Mn, Co, Zn, and Pb were slightly polluted, and Cu and Ni were moderately polluted in the region. Potential ecological risk index (RI) and mean possible effect level (PEL) quotient were conducted to assess ecological risk. The RI and mean PEL quotient demonstrated that surface sediments of Zhelin Bay were slight ecological risks and exhibited a 21% probability of toxicity. Principal component analysis (PCA) combined with the correlation analysis (CA) and hierarchical cluster analysis (HAC) revealed that the heavy metal contamination in Zhelin Bay might originate from three type sources.

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