Key Lab of Submarine Geosciences and Prospecting Techniques, MOE and College of Marine Geoscience, Ocean University of China, Qingdao 266100, PR China; Key laboratory of coastal zone geological environment protection, Shandong Geology and Mineral Exploration and Development Bureau, Shandong Provincial No.4 Institute of Geological and Mineral Survey, Weifang 261021, PR China.
Yantai Coastal Zones Geological Survey, China Geological Survey, Yantai 264000, PR China.
Mar Pollut Bull. 2023 May;190:114885. doi: 10.1016/j.marpolbul.2023.114885. Epub 2023 Apr 2.
In this study, 78 surface sediment samples were collected from the Weihai coastal area and analyzed for heavy metals. Their concentrations and pollution status were evaluated. The distribution of heavy metals was mainly dominated by sediment grain size, and the sediments in the Weihai, Sanggou, and Rushan Bays, which have finer grain sizes, had higher concentrations. The mean geoaccumulation index values for all heavy metals were <0. Expect for Hg, the mean enrichment factor values of the other metals were <1.5, indicating that they are natural sourced. Overall, the environmental quality of the Weihai costal area was relatively good and should be maintained and protected. The heavy metals that had potential impacts on the ecological environment were Cd and Hg, which were mainly distributed west of Weihai Bay and inside Rushan Bay. They are affected by human activities and must be controlled.
本研究采集了威海近岸海域 78 个表层沉积物样品，分析了重金属含量，评价了其污染状况。重金属的分布主要受沉积物粒径控制，粒度较细的威海湾、桑沟湾和乳山湾沉积物中重金属含量较高。所有重金属的地积累指数均值均小于 0，除 Hg 外，其他金属的富集因子均值均小于 1.5，表明重金属主要来源于自然源。总体来看，威海近岸海域环境质量良好，应加以维持和保护。对生态环境有潜在影响的重金属是 Cd 和 Hg，主要分布在威海湾西部和乳山湾内，受人类活动影响较大，需加以控制。
