title: Influence of urbanization and industrialization on metal enrichment of sediment cores from Shantou Bay, South China.
abstract: Four sediment cores were collected to investigate geochemical sources and to assess enrichment and pollution of metals in sediments from Shantou Bay, an area experiencing rapid economic development on the Southeastern Coast of China. The results indicated that the concentrations of the majority of metals showed a decrease with depth, with overall maximum values in the top layers, and that different sampling locations in the Bay received slightly different types of inputs. Three major sources were identified by correlation analysis and principal component analysis: river inputs, metropolitan, and port facilities discharge. Calculation of a pollution load index revealed overall low values, but the enrichment factor values for Pb and Cd were typically high for all cores. The mean concentrations of Cu, Pb, Zn and to some extent Cd exceeded the Effects-Range-Low values in the majority of the cases, indicating that there were possible ecotoxicological risks to organisms in Shantou Bay.
authors.affiliation: Institute of Hydrobiology, Jinan University, Huangpu Street 601, Guangzhou 510632, PR China. Electronic address: qym77@yeah.net.
authors.forename: Yongmin
authors.initials: Y
authors.lastname: Qiao
authors.forename: Yang
authors.initials: Y
authors.lastname: Yang
authors.forename: Jiangang
authors.initials: J
authors.lastname: Zhao
authors.forename: Ran
authors.initials: R
authors.lastname: Tao
authors.forename: Ronghua
authors.initials: R
authors.lastname: Xu
mesh_terms: D061006:Bays / Q000737:chemistry*; D002681:China; D019015:Geologic Sediments / Q000737:chemistry*; D007221:Industry / Q000706:statistics & numerical data; D008670:Metals / Q000032:analysis*; D014507:Urbanization / Q000639:trends; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical
keywords: Contamination assessment; Enrichment factor; Metals; Sediment cores; Shantou Bay