Pollution and Potential Ecological Risk Assessment of Heavy Metals in Surface Sediments of Tangxun Lake

• Published in: Huanjing kexue Vol. 43; no. 2; p. 859
• Main Authors: Li, Xing-Yu, Li, Peng, Su, Ye-Wang, Shi, Ming-Ming, Hu, Tian-Peng, Mao, Yao, Liu, Li, Zhang, Ya, Xing, Xin-Li, Qi, Shi-Hua
• Format: Journal Article
• Language: Chinese
• Published: China 08.02.2022
• Subjects: China; Environmental Monitoring; Geologic Sediments; Lakes; Metals, Heavy - analysis; Risk Assessment; Water Pollutants, Chemical - analysis; China; ecological risk; pollution; heavy metals; surface sediments; Tangxun Lake
• ISSN: 0250-3301
• DOI: 10.13227/j.hjkx.202105129

In order to understand the pollution characteristics, spatial distribution, potential sources, and ecological risk of heavy metals in the sediments of Tangxun Lake, the contents of heavy metals (As, Hg, Cd, Cr, Cu, Pb, Zn, and Ni) in the surface sediments of Tangxun Lake were analyzed, and the pollution status and potential ecological risk degree of heavy metals in the sediments were evaluated using the geo-accumulation index and potential ecological risk index. The potential sources of heavy metal pollutants were analyzed by correlation and principal component analysis. The results showed that except for Cr, the contents of other heavy metals were higher than their background values. The contents of Hg, Cd, Zn, and Cu were higher in the southwest and northeast corners of the lake, which may come from the combined pollution of sewage discharge, fisheries, and surrounding industrial and agricultural activities. The geo-accumulation index and potential ecological risk showed that Hg and Cd were in moderate poll