title: The trend and extent of heavy metal accumulation over last one hundred years in the Liaodong Bay, China.
abstract: An integrated analysis has been carried out on two cores dated by combination of (210)Pb and (137)Cs 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 (206)Pb/(207)Pb ratio indicated lead in the surface sediments mainly come from anthropogenic activities.
authors.affiliation: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China. bingx@mail.igcas.ac.cn
authors.forename: Bing
authors.initials: B
authors.lastname: Xu
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Yang
authors.forename: Zhaoyan
authors.initials: Z
authors.lastname: Gu
authors.forename: Yanhui
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yongfu
authors.initials: Y
authors.lastname: Chen
authors.forename: Yanwu
authors.initials: Y
authors.lastname: Lv
mesh_terms: D002104:Cadmium / Q000032:analysis / Q000266:history; D002681:China; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000032:analysis*; D049672:History, 19th Century; D049673:History, 20th Century; D007854:Lead / Q000032:analysis / Q000266:history; D007856:Lead Radioisotopes / Q000032:analysis; D008628:Mercury / Q000032:analysis / Q000266:history; D019216:Metals, Heavy / Q000032:analysis* / Q000266:history; D009792:Oceans and Seas; D013997:Time Factors; D014873:Water Pollutants / Q000032:analysis* / Q000266:history; D015032:Zinc / Q000032:analysis / Q000266:history
chemical_list: D007856:Lead Radioisotopes; D019216:Metals, Heavy; D014873:Water Pollutants; D002104:Cadmium; D007854:Lead; D008628:Mercury; D015032:Zinc