title: Occurrence of endocrine-disrupting chemicals in riverine sediments from the Pearl River Delta, China.
abstract: The endocrine-disrupting chemicals (EDCs) was investigated in 28 riverine sediments from the Pearl River system, China and analyzed by an ultrasonication extraction and GC-MS method. The concentrations of 4-tert-octylphenol (OP), 4-nonylphenol (NP), and bisphenol A (BPA) in the sediments were in the ranges of <2.0-210, 107-16198 and <1.7-430 ng/g dw, respectively. The steroid estrogens estrone (E1) and 17β-estradiol (E2) in the sediments ranged from <1.3 to 10.9 ng/gdw and from <0.9 to 2.6 ng/gdw, respectively. The spatial distribution of these chemicals was related to the discharge of domestic and industrial wastewater along the rivers. The positive correlation between EDCs and total organic carbon indicates that sedimentary organic carbon is an important factor in controlling the distributions of EDCs. Compared with other previous studies, the ZR and DR rivers from the PRD were heavily contaminated by APs and BPA.
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Gong
authors.forename: Yong
authors.initials: Y
authors.lastname: Ran
authors.forename: Di-Yun
authors.initials: DY
authors.lastname: Chen
authors.forename: Yu
authors.initials: Y
authors.lastname: Yang
mesh_terms: D001559:Benzhydryl Compounds; D002244:Carbon / Q000032:analysis; D002681:China; D052244:Endocrine Disruptors / Q000032:analysis*; D004784:Environmental Monitoring; D004958:Estradiol / Q000032:analysis; D004970:Estrone / Q000032:analysis; D019015:Geologic Sediments / Q000737:chemistry*; D010636:Phenols / Q000032:analysis; D045483:Rivers / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D002244:Carbon; D052244:Endocrine Disruptors; D004958:Estradiol; D004970:Estrone; D010636:Phenols; D014874:Water Pollutants, Chemical; C025256:nonylphenol; C105260:4-tert-octylphenol; C006780:bisphenol A; D000098826:Bisphenol A Compounds