期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 20, 期 6, 页码 4099-4110出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-012-1332-z
关键词
Heavy metal contamination; Sediment quality guidelines; Multivariate statistics; Bohai Bay
资金
- Project of State Oceanic Administration, China [908-01-CJ04]
- Marine Public Welfare Research Project [200805063]
- National Natural Science Foundation of China [41206049, 40976036, 40906033]
- Open Foundation of the State Key Laboratory of Loess and Quaternary Geology [SKLLQG1107]
- Open Foundation of the Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology [MRE201231]
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.
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