中国南方典型海水养殖区柘林湾表层沉积物中重金属的分布、多指标评价及来源
Distribution, Multi-Index Assessment, and Sources of Heavy Metals in Surface Sediments of Zhelin Bay, a Typical Mariculture Area in Southern China.
作者信息
Han Yan-Jie, Liang Rui-Ze, Li Hai-Song, Gu Yang-Guang, Jiang Shi-Jun, Man Xiang-Tian
机构信息
College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China.
South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China.
出版信息
Toxics. 2023 Feb 3;11(2):150. doi: 10.3390/toxics11020150.
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 () and pollution load index (PLI) were implemented to assess degree of heavy metal contamination. The 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.
对柘林湾表层沉积物中重金属的发生、多指标评估及来源进行了调查。重金属平均浓度（mg/kg）分别为：铬81.89、锰770.76、钴16.81、镍62.25、铜96.30、锌162.04、铅73.40，所研究的7种重金属浓度均显著高于其相应背景值。采用地累积指数（）和污染负荷指数（PLI）评估重金属污染程度。地累积指数和污染负荷指数表明，该区域铬、锰、钴、锌和铅轻度污染，铜和镍中度污染。采用潜在生态风险指数（RI）和平均可能效应水平（PEL）商评估生态风险。潜在生态风险指数和平均可能效应水平商表明，柘林湾表层沉积物存在轻微生态风险，毒性概率为21%。主成分分析（PCA）结合相关分析（CA）和层次聚类分析（HAC）表明，柘林湾的重金属污染可能源于三种类型的来源。
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