title: Spatial distributions, source apportionment and ecological risk of SVOCs in water and sediment from Xijiang River, Pearl River Delta.
abstract: Xijiang River is an important drinking water source in Guangxi Province, China. Along the Xijiang River and surrounding tributary, the pollution profile of three important groups of semi-volatile organic compounds, including polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs) and phthalate esters (PAEs), was analyzed. Relatively low levels of PAHs (64-3.7 × 102ng L-1) and OCPs (16-70 ng L-1), but high levels of PAEs (7.9 × 102-6.8 × 103ng L-1) occurred in the water. Comparatively, low levels of OCPs (39-1.8 × 102ng g-1) and PAEs (21-81 ng g-1), but high levels of PAHs (41-1.1 × 103ng g-1) were found in sediment. Principal component analyses for source identification indicated petroleum-derived residues or coal and biomass combustion, and vehicular emission was the main sources for PAHs. The OCPs sources of each category were almost independent, whereas the new input of HCHs and p,p'-DDTs probably existed in some areas. PAEs were mainly originated from personal care products of urban sewage, plastic and other industrial sources. Ecological risk through the risk quotient analysis indicated a small or significant potential adverse effect on fish, daphnia and green algae. Nevertheless, the integrated risk of all pollutants should be taken into account in future study.
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.|University of Chinese Academy of Sciences, Beijing, 100049, China.
authors.forename: Jiao
authors.initials: J
authors.lastname: Tang
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.|Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China.
authors.forename: Taicheng
authors.initials: T
authors.lastname: An
authors.affiliation: Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China. ligy1999@gdut.edu.cn.
authors.forename: Guiying
authors.initials: G
authors.lastname: Li
authors.affiliation: School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
authors.forename: Chaohai
authors.initials: C
authors.lastname: Wei
mesh_terms: D002681:China; D003031:Coal / Q000032:analysis; D003634:DDT / Q000032:analysis; D004463:Ecology; D004784:Environmental Monitoring / Q000379:methods*; D004787:Environmental Pollution / Q000032:analysis*; D019015:Geologic Sediments / Q000737:chemistry*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis; D010575:Pesticides / Q000032:analysis; D010578:Petroleum / Q000032:analysis; D010795:Phthalic Acids / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis; D045483:Rivers / Q000737:chemistry; D014867:Water; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D003031:Coal; D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D010578:Petroleum; D010795:Phthalic Acids; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; D014867:Water; C032279:phthalic acid; D003634:DDT
keywords: Ecological risks; OCPs; PAEs; PAHs; Xijiang River