First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China; Key Laboratory of Marine Geology and Metallogeny, Ministry of Natural Resources, Qingdao 266061, China.
First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China; Key Laboratory of Marine Geology and Metallogeny, Ministry of Natural Resources, Qingdao 266061, China; Laboratory of Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China.
Mar Pollut Bull. 2023 Nov;196:115620. doi: 10.1016/j.marpolbul.2023.115620. Epub 2023 Oct 5.
In this study, the sources of nine heavy metals (Cd, As, Hg, Cu, Pb, Ni, Cr, Zn, and Co) in the sediments of the Bohai Sea were quantitatively identified through a positive factor matrix to provide better advice for marine and coastal management. In Bohai Sea sediments, most metals fell below detectable contamination levels, including As, Cu, Pb, Ni, Cr, Zn, and Co. Unfortunately, Bohai Sea sediments were moderately to significantly enrich with Cd and Hg, posing potentially adverse ecological risks to aquatic ecosystems. Our modeled results showed three factors representing natural, anthropogenic, and atmospheric deposition sources. Enriched Cd and Hg were likely derived from anthropogenic activities through river runoff and atmospheric deposition due to adjacent Zn smelting and chlor-alkali production, respectively. The other metals were mainly derived from natural sources.
在这项研究中，通过正向因子矩阵定量识别了渤海沉积物中 9 种重金属（Cd、As、Hg、Cu、Pb、Ni、Cr、Zn 和 Co）的来源，为海洋和沿海管理提供了更好的建议。在渤海沉积物中，大多数金属低于可检测污染水平，包括 As、Cu、Pb、Ni、Cr、Zn 和 Co。不幸的是，渤海沉积物中 Cd 和 Hg 中度至显著富集，对水生态系统构成潜在的不利生态风险。我们的模拟结果显示了三个代表自然、人为和大气沉积源的因子。富集的 Cd 和 Hg 可能是由于附近的 Zn 冶炼厂和氯碱厂的河流径流和大气沉降等人为活动产生的，而其他金属主要来自自然源。
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