期刊
MARINE POLLUTION BULLETIN
卷 175, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2021.113152
关键词
Sediments; Heavy metals; Spatial distribution; Influencing factors; Hydrodynamic conditions
资金
- Natural Science Foundation of Shandong Province [ZR2019MD037]
- National Natu-ral Science Foundation of China [41776059]
This study investigated the pollution level of heavy metals (HMs), their sources, and the factors influencing their distribution in the Haiyang coastal areas. The results showed that Cr, Cu, and Pb originated from natural processes, while Zn and Hg were derived from anthropogenic activities. The distribution of HMs was mainly influenced by sediment grain size, hydrodynamic effects, and human activities.
In this study, the pollution level of heavy metals (HMs), their sources as well as factors influencing their distribution, were studied using data about the concentration of Cr, Pb, Cu, As, Hg and Zn in surface sediment samples from Haiyang coastal areas, and those on sediment grain size and tidal residual currents. Cr, Cu and Pb originated from natural processes and had similar distributions which were mainly affected by sediment grain size, tidal residual currents and coastal currents. Areas with high levels of these elements were also mainly located in the sedimentation zone of fine materials with weak hydrodynamic force. In contrast, Zn and Hg were derived from anthropogenic activities such as industrial sewage and raft cultures, while As originated from both natural and human sources. Overall, sediment grain size, hydrodynamic effects and human activities were the main factors affecting the distribution of HMs in the Haiyang coastal sea.
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