伊朗北部安扎利湿地沉积物中微量元素的污染及生态风险评估。
Contamination and ecological risk assessment of trace elements in sediments of the Anzali Wetland, Northern Iran.
机构信息
Department of Civil Engineering, Faculty of Engineering, University of Science and Culture, Tehran, Iran E-mail:
Department of Water Engineering, Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran.
出版信息
Water Sci Technol. 2021 Nov;84(9):2578-2590. doi: 10.2166/wst.2021.455.
In this paper, concentrations of some heavy metals in surficial sediments of the International Anzali Wetland were measured, this wetland is located in the northern part of Iran. Sediment pollution levels were examined and analyzed using reliable pollution indices including Pollution Load Index (PLI), Geoaccumulation Index (Igeo) and Enrichment Factor (CF), and finally it was revealed that heavy metal pollution ranged from low to moderate loads in the wetland. According to Sediment Quality Guidelines (SQGs) and Ecological Risk Index (ERI), it was concluded that As and Ni may have significant toxic impacts on aquatic organisms and also according to Effect Range Median (ERM), the toxicity probability of sediments in the Anzali wetland was estimated at 21%.
本文测量了伊朗北部的国际安扎利湿地表层沉积物中一些重金属的浓度。利用可靠的污染指数，包括污染负荷指数（PLI）、地积累指数（Igeo）和富集因子（CF），对沉积物污染水平进行了检验和分析，结果表明，该湿地的重金属污染属于低到中等负荷。根据沉积物质量准则（SQGs）和生态风险指数（ERI），砷和镍可能对水生生物产生显著的毒性影响，根据效应区间中位数（ERM），估计安扎利湿地沉积物的毒性概率为 21%。
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