Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Ministry of Land and Resources, Qingdao, 266071, China.
Environ Sci Pollut Res Int. 2013 Jun;20(6):4099-110. doi: 10.1007/s11356-012-1332-z. Epub 2012 Dec 9.
The concentrations of heavy metals (Cd, Cr, Cu, Ni, Pb, and Zn) and organic carbon in surface sediments, collected from the southern Bohai Bay, were determined to assess the potential contamination and determine the environmental risks associated with heavy metals. Results showed that heavy metal concentrations in the sediments generally met the China Marine Sediment Quality criteria. Both the ecotoxicological index and the potential ecological risk index suggest that the combined ecological risk of the six studied metals may be low, with the highest ecotoxicological potential zones located in the offshore area. The methods of enrichment factor and geoaccumulation index suggested that elevated concentrations of Cd, Cr, and Ni are presented in the region. Multivariate analysis also indicated that the lithogenic factor dominates the distribution of most part of the considered metals in the study area, whereas Cd and Cr are clearly influenced by anthropogenic inputs. The results of this study are likely to be a useful tool to authorities in charge of sustainable marine management.
本研究采集了渤海湾南部表层沉积物，测定了其中重金属（Cd、Cr、Cu、Ni、Pb 和 Zn）和有机碳的浓度，以评估重金属的潜在污染和环境风险。结果表明，沉积物中重金属浓度普遍符合中国海洋沉积物质量标准。生态毒理学指数和潜在生态风险指数均表明，所研究的六种金属的综合生态风险可能较低，最高的生态毒理学潜在区域位于近海区域。富集因子和地积累指数的方法表明，该地区 Cd、Cr 和 Ni 的浓度较高。多元分析还表明，在研究区域，大部分考虑金属的分布主要受岩石成因因素控制，而 Cd 和 Cr 则明显受到人为输入的影响。本研究结果可能为负责海洋可持续管理的相关部门提供有用的工具。
