title: Multivariate statistical and GIS-based approach to identify source of anthropogenic impacts on metallic elements in sediments from the mid Guangdong coasts, China.
abstract: Growing concerns surround the mid Guangdong coasts, one of China's fastest and developing economical regions. To study the environmental impacts of economic and industrial development, we measured ten metallic elements (Hg, Pb, Cu, Zn, Fe, Al, Ni, Sr, Li, and Co) in surface sediments from nineteen stations in three bays. All these metals showed concentrations substantially higher than their background values, suggesting possible anthropogenic pollution. Highest metal levels were close to the nuclear power plants likely as a result of nuclear waste discharges. Results revealed that Hg, Pb, and Sr largely originated from human activities, while Cu, Ni, Co, Al, and Fe mainly from natural rock weathering. Two types of anthropogenic sources were identified through a principal component analysis, one from shipping industry, port transport service and nuclear power plants, and the other from municipal sewage and coal power plant.
authors.affiliation: Institute of Hydrobiology, Jinan University, Guangzhou 510632, China.
authors.forename: Yang-Guang
authors.initials: YG
authors.lastname: Gu
authors.forename: Zhao-Hui
authors.initials: ZH
authors.lastname: Wang
authors.forename: Song-Hui
authors.initials: SH
authors.lastname: Lu
authors.forename: Shi-Jun
authors.initials: SJ
authors.lastname: Jiang
authors.forename: De-Hai
authors.initials: DH
authors.lastname: Mu
authors.forename: Yong-Hong
authors.initials: YH
authors.lastname: Shu
mesh_terms: D002681:China; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods*; D040362:Geographic Information Systems; D019015:Geologic Sediments / Q000737:chemistry*; D008670:Metals / Q000032:analysis*; D015999:Multivariate Analysis; D012623:Seawater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical