南海北部湾东部沉积物中痕量金属的历史记录。
Historical records of trace metals in sediments of the eastern Beibu Gulf, South China Sea.
机构信息
Shandong Provincial No.4 Institute of Geological and Mineral Survey, Weifang 261021, PR China.
Hainan Key Laboratory of Marine Geological Resources and Environment, Haikou 570206, PR China; Marine Geological Institute of Hainan Province, Haikou 570206, PR China.
出版信息
Mar Pollut Bull. 2022 Nov;184:114141. doi: 10.1016/j.marpolbul.2022.114141. Epub 2022 Sep 20.
In this study, trace metal (Cu, Pb, Zn, Cr, Cd, As, Hg, Ni, Li, and Co) concentration profiles along a sediment core were investigated to obtain background values and assess depositional trends and contamination levels in the Beibu Gulf. The EFs of all metals indicated no enrichment. The mean concentrations of all trace metals in the 10-6.5 ka phase could be considered the background values in the study area. Factor and principal component analyses indicated that the metals were mainly naturally sourced throughout the observed depositional period. Their geoaccumulation indices revealed that the sediments were not contaminated by trace metals.
在这项研究中，调查了沿沉积物芯的痕量金属（Cu、Pb、Zn、Cr、Cd、As、Hg、Ni、Li 和 Co）浓度分布，以获得北部湾的背景值并评估沉积趋势和污染水平。所有金属的 EF 值均未显示富集。在 10-6.5ka 阶段，所有痕量金属的平均浓度可被视为研究区域的背景值。因子和主成分分析表明，在整个观测沉积期，金属主要来源于自然源。它们的地质累积指数表明，沉积物没有受到痕量金属的污染。
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