期刊
MARINE POLLUTION BULLETIN
卷 170, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2021.112663
关键词
Heavy metal; Surface sediment; Ecological impact assessment; Contamination evaluation; Tidal flat; North Jiangsu coast
资金
- National Natural Science Foundation of China [41671195, 41801005]
- Natural Science Research Project of Jiangsu Universities [20KJB170010]
- Natural Science Foundation of Jiangsu Province [BK20200735]
- Marine science and technology innovation project of Jiangsu province [JSZRHYKJ202002]
The study revealed that the contamination levels of heavy metals in surface sediments along the North Jiangsu coast were generally low, with a slight potential toxicity to the ecosystem. Spatial distributions of heavy metals varied significantly among different regions, mainly influenced by natural factors and human activities.
We investigated the contamination levels of nine heavy metals (Mn, Pb, V, Cr, Co, Ni, Cu, Zn, and As) in 153 surface sediment samples collected along five tidal flats on the North Jiangsu coast, China. The spatial distributions of most heavy metals gradually decreased from the northern Sheyang region to the southern Jianggang region, while slightly increasing in the Rudong region. Principal component analysis indicated that Co, Ni, Cu, Zn, and As were mainly derived from the natural environment, V and Cr were mainly derived from human activities. Additionally, Mn and Pb influenced by both natural and human sources. The geo-accumulation index and the contamination factor indicated that heavy metal contamination in the sediments exhibited little to no pollution levels. The potential ecological risk index exhibiting low ecological risks. Meanwhile, the mean probable effect level quotient values indicating slight toxicity. Cr and Ni were the major contributors to toxicity.
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