期刊
CHEMOSPHERE
卷 75, 期 4, 页码 442-446出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2008.12.067
关键词
Heavy metals; Pb-206/Pb-207; Pb-210; Cs-137; Liaodong Bay
资金
- National Natural Science Foundation [40672118]
An integrated analysis has been carried out on two cores dated by combination of Pb-210 and Cs-137 in order to characterize the extent of heavy metal accumulation in the Liaodong Bay, Northern China. The concentrations and burial fluxes of Zn, Pb, Cd, and Hg increased abruptly after late 1970s. The enrichment factors of Cd, Hg, Zn and Pb are more than 30, 10, 7, and 3.5. respectively, in the surface sediments. Coincident to the increase of heavy metal contents, the decreasing trend of Pb-206/Pb-207 ratio indicated lead in the surface sediments mainly come from anthropogenic activities. (C) 2009 Elsevier Ltd. All rights reserved.
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