Occurrence of endocrine-disrupting chemicals in riverine sediments from the Pearl River Delta,China |
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| Institution: | 1. Department of Marine Sciences, Ocean College, Zhejiang University, Hangzhou 310058, China;2. Key Laboratory of Marine Ecosystem and Biogeochemistry, The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310032, China;3. Physical/Chemical Oceanography Department, Nigerian Institute for Oceanography and Marine Research, P.M.B. 12729 Lagos, Nigeria;4. Analysis and Inspection Center, Yanbian University, Park Road 977, Yanji City, Jilin Province 133002, China |
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| 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/g dw and from <0.9 to 2.6 ng/g dw, 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. |
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