title: Seasonal and spatial distribution of 4-tert-octylphenol, 4-nonylphenol and bisphenol A in the Huangpu River and its tributaries, Shanghai, China.
abstract: The seasonal variations and spatial distributions of 4-tert-octylphenol (OP), 4-nonylphenol (NP) and bisphenol A (BPA) in surface waters, suspended solids and surface sediments in the Huangpu River and its tributaries (Suzhou River and Yunzao Brook) were firstly investigated. The mean concentrations of OP, NP and BPA in the three rivers were 10.59, 120.96 and 22.93 ng L(-1) in surface waters, 199.87, 2,300.87 and 84.11 ng g(-1) in suspended solids and 9.49, 119.44 and 7.13 ng g(-1) dry weight in surface sediments, respectively. The concentrations of NP and OP were higher in summer than in winter in the suspended solids and surface sediments, while the reverse was true in surface waters. Similarly, the levels of BPA were lower in summer than in winter in surface sediments, while the opposite was true in surface waters and suspended solids. These seasonal variations might be attributed to temperature and stream flows. High levels of OP, NP and BPA were found in surrounding river intersections, residential and industrial areas. Their concentrations decreased gradually with increasing distance from those areas, while the lowest levels were measured in near less urbanized and agricultural areas. These phenomena might indicate that the stream current and pollutant source were the major factors that affect the spatial distributions of OP, NP and BPA in the three rivers. Ecological risk assessment indicated that NP was the only one of the three pollutants with the potential to influence local aquatic organisms. The results of this study provide scientific support for control of these pollutants.
authors: School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
authors: Minghong
authors: M
authors: Wu
authors: Liang
authors: L
authors: Wang
authors: Gang
authors: G
authors: Xu
authors: Ning
authors: N
authors: Liu
authors: Liang
authors: L
authors: Tang
authors: Jisan
authors: J
authors: Zheng
authors: Tingting
authors: T
authors: Bu
authors: Bingli
authors: B
authors: Lei
mesh_terms: D001559:Benzhydryl Compounds / Q000032:analysis*; D002681:China; D052244:Endocrine Disruptors / Q000032:analysis; D004784:Environmental Monitoring; D010636:Phenols / Q000032:analysis*; D045483:Rivers / Q000737:chemistry*; D012621:Seasons; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data*; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D052244:Endocrine Disruptors; D010636:Phenols; D014874:Water Pollutants, Chemical; C041594:4-nonylphenol; C105260:4-tert-octylphenol; C006780:bisphenol A; D000098826:Bisphenol A Compounds