title: Pollution levels and risks of polycyclic aromatic hydrocarbons in surface sediments from two typical estuaries in China.
abstract: To assess the environmental risks of polycyclic aromatic hydrocarbons (PAHs), 48 and 45 sediments were collected from the Yangtze River Estuary (YRE) and Pearl River Estuary (PRE), respectively. The toxicity equivalency concentration (TEQ) in the YRE and PRE were ranged from 1.68 to 76.13 and 9.28 to 129.24ngTEQg-1, respectively. Results of risk quotient suggest that ecological risks of two estuaries are at a moderate level, but are higher in the PRE than YRE. The increment lifetime cancer risks (ILCR) from the YRE via ingestion and dermal contact were 1×10-6to 5.6×10-5and 4×10-6to 1.6×10-4, and ranged from 7×10-6to 9.4×10-5and 2×10-5to 2.8×10-4in the PRE. ILCR results suggest that some low and moderate cancer risk exists in the YRE and PRE. Therefore, monitoring and control measures should be carried out immediately to reduce or eliminate the risks to human health from environmental exposure.
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, China; Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China.
authors.forename: Chenglong
authors.initials: C
authors.lastname: Wang
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, China; Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China; Collaborative Innovation Center of South China Sea Studies, Nanjing University, Nanjing 210093, China. Electronic address: zouxq@nju.edu.cn.
authors.forename: Xinqing
authors.initials: X
authors.lastname: Zou
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, China; Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China; Collaborative Innovation Center of South China Sea Studies, Nanjing University, Nanjing 210093, China.
authors.forename: Yali
authors.initials: Y
authors.lastname: Li
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, China; Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China.
authors.forename: Yifei
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, China; Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China.
authors.forename: Qiaochu
authors.initials: Q
authors.lastname: Song
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, China; Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China; Marine Fisheries Research Institute of Jiangsu Province, Nantong 226007, China.
authors.forename: Wenwen
authors.initials: W
authors.lastname: Yu
mesh_terms: D002681:China; D004463:Ecology; D004784:Environmental Monitoring; D063366:Estuaries / Q000706:statistics & numerical data; D019015:Geologic Sediments / Q000737:chemistry*; D006801:Humans; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D018570:Risk Assessment; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical
keywords: Pearl River Estuary; Polycyclic aromatic hydrocarbons; Risk assessment; Surface sediment; Yangtze River Estuary