School of Geography and Ocean Science, Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing, China; College of Marine Geo-Science, Ocean University of China, Qingdao, 266100, China.
Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Qingdao, 26610, China; College of Marine Geo-Science, Ocean University of China, Qingdao, 266100, China.
Chemosphere. 2021 Sep;278:130352. doi: 10.1016/j.chemosphere.2021.130352. Epub 2021 Mar 22.
Based on the Cr, Pb, Zn, Cd, and As content and grain data from the surface sediments of 56 sampling sites in the coastal waters off the northern Shandong Peninsula, the distribution characteristics of heavy metals in sediments were analyzed, and the sources of these elements were discussed. The results show that the distributions of Cr, Pb, and Zn were similar to each other, while the distributions of As and Cd differed from the other three, with Cr, Pb, Cd, and As all showing high concentrations in the Dengzhou shoal. Cr, Pb, and Zn, which are controlled by fine-grained components of surface sediments, mainly originated from natural processes, As mainly originated from aquaculture, and Cd originated from both natural and human sources. The high concentrations of heavy metals were mostly in areas of residual current convergence and coastal current action, and the distribution of heavy metals can be well correlated to the sedimentary dynamic environment. Human activities, grain size and hydrodynamic conditions are therefore important factors that influence the distribution of heavy metals in this study area.
基于山东半岛北部近岸海域 56 个采样点表层沉积物中 Cr、Pb、Zn、Cd 和 As 的含量和粒度数据，分析了沉积物中重金属的分布特征，并探讨了这些元素的来源。结果表明，Cr、Pb 和 Zn 的分布相似，而 As 和 Cd 的分布则与其他三种元素不同，Cr、Pb、Cd 和 As 在灯州浅滩的浓度均较高。受表层沉积物细颗粒组分控制的 Cr、Pb 和 Zn 主要来源于自然过程，As 主要来源于水产养殖，而 Cd 则来源于自然和人为来源。重金属的高浓度主要出现在残余流汇聚区和沿岸流作用区，重金属的分布与沉积动力环境具有很好的相关性。因此，人类活动、粒度和水动力条件是影响研究区重金属分布的重要因素。
