中国黄海半封闭海湾胶州湾砷和锑的基线、富集和生态风险。
Baseline, enrichment, and ecological risk of arsenic and antimony in the Jiaozhou Bay, a semi-enclosed bay of the Yellow Sea, China.
机构信息
State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
出版信息
Mar Pollut Bull. 2021 Jul;168:112431. doi: 10.1016/j.marpolbul.2021.112431. Epub 2021 Apr 30.
Arsenic (As) and antimony (Sb) are toxic metalloids widely distributed in coastal sediments, but are seldom studied for their geochemical baselines. In this study, sediment samples were collected from Jiaozhou Bay (JZB) to evaluate their baselines, contamination, and ecological risk. Results showed that the As and Sb concentrations were between 3.15 and 11.94 mg/kg and 0.20-0.61 mg/kg, respectively. Sc and Fe showed good performance in developing geochemical baseline functions for the metalloids. Organic matter content and clay had significant positive correlations with metalloid abundance in sediments (p < 0.01). In the JZB, As and Sb were not enriched in the sediments, with the enrichment factors below 1. Furthermore, the contamination degrees of As and Sb were low in the JZB. In addition, the ecological risks of As and Sb were relatively low in the JZB, with the risk index between 4.02 and 12.70 and 1.68-5.09, respectively.
砷（As）和锑（Sb）是广泛分布于沿海沉积物中的有毒类金属，但对其地球化学基线的研究却很少。本研究采集了胶州湾（JZB）沉积物样品，以评估其基线、污染和生态风险。结果表明，As 和 Sb 的浓度分别为 3.15-11.94mg/kg 和 0.20-0.61mg/kg。Sc 和 Fe 在开发类金属地球化学基线函数方面表现良好。有机质含量和粘土与沉积物中类金属丰度呈显著正相关（p<0.01）。在胶州湾，As 和 Sb 没有在沉积物中富集，其富集因子均低于 1。此外，胶州湾的 As 和 Sb 污染程度较低。此外，胶州湾的 As 和 Sb 生态风险相对较低，风险指数分别为 4.02-12.70 和 1.68-5.09。
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