Institute of Geochemical Exploration and Marine Geological Survey, ECE, Nanjing 210007, PR China.
Key Lab of Submarine Geosciences and Prospecting Techniques, MOE, College of Marine Geoscience, Ocean University of China, Qingdao 266100, PR China.
Mar Pollut Bull. 2023 Aug;193:115187. doi: 10.1016/j.marpolbul.2023.115187. Epub 2023 Jun 17.
The concentration profiles of various major and trace heavy metals (Cu, Pb, Zn, Cr, Cd, As, Hg, Ni, Li, and Co) were investigated along a 40.1-m-long sediment core in the offshore Jiangsu area of China, to assess their depositional trends and contamination levels. All metals, except Cd, exhibited similar profiles with high average concentrations during the Marine Isotope Stage 2-4 period. The sediment trace-metal concentrations were primarily related to grain size and sediment sources, with almost all heavy metals (except Cd) being positively correlated. Enrichment factors, geoaccumulation indices, and principal component analysis indicated no elemental enrichment or contamination. The high EF and I values of As, Hg, and Li may be related to their background values.
对中国江苏近海 40.1 米长的沉积物岩芯中的各种主要和痕量重金属（Cu、Pb、Zn、Cr、Cd、As、Hg、Ni、Li 和 Co）的浓度分布进行了研究，以评估它们的沉积趋势和污染水平。除 Cd 外，所有金属在海洋同位素阶段 2-4 期间均表现出相似的高平均浓度分布模式。沉积物痕量金属浓度主要与粒度和沉积物来源有关，几乎所有重金属（除 Cd 外）均呈正相关。富集因子、地积累指数和主成分分析表明，没有元素富集或污染。As、Hg 和 Li 的高 EF 和 I 值可能与其背景值有关。
