Emission patterns and risk assessment of polybrominated diphenyl ethers and bromophenols in water and sediments from the beijiang river, south china
| Autor: | Taicheng An, Guiying Li, Chaohai Wei, Jukun Xiong, Chaosheng Zhang |
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| Rok vydání: | 2016 |
| Předmět: |
Pollution
China Geologic Sediments brominated flame retardants (bfrs) 010504 meteorology & atmospheric sciences Health Toxicology and Mutagenesis media_common.quotation_subject Polybrominated Biphenyls bromophenols emission patterns health-risk human exposure 010501 environmental sciences Toxicology 01 natural sciences gis brominated flame retardants chemistry.chemical_compound Polybrominated diphenyl ethers Dry weight Phenols Rivers Halogenated Diphenyl Ethers Benzhydryl Compounds 0105 earth and related environmental sciences media_common Flame Retardants Pollutant polybrominated diphenyl ethers (pbdes) tetrabromobisphenol Sediment risk assessment Estrogens General Medicine polychlorinated-biphenyls endocrine disrupting chemicals pbdes bisphenol-a chemistry Environmental chemistry Tetrabromobisphenol A highly industrialized area aquatic environment Water Pollutants Chemical Environmental Monitoring |
| Popis: | To reveal the emission patterns of brominated flame retardants (BFRs) in the Beijiang River, South China, concentrations of polybrominated diphenyl ethers (PBDEs) and phenolic BFRs (2,4,6-tribromophenol (TBP), pentabromophenol (PeBP), tetrabromobisphenol A (TBBPA)), and bisphenol A (BPA) in water and sediments were simultaneously measured, and the geographic information system (GIS) were applied to analyse their emission patterns. Results showed that PBDEs, TBP, PeBP, TBBPA and BPA were ubiquitous in the water and sediment samples collected from the Beijiang River. However, most of the concentrations were very low or below the detection limits (DL). In water, Σ20PBDEs (sum of all 20 PBDEs congeners) levels ranged from < DL to 232 pg L-1, with the predominant congeners containing low bromine contents. The levels of TBP, PeBP, TBBPA and BPA in water were lower than 810 pg L-1. In sediments, Σ20PBDEs varied from 260 to 5640 pg g-1 dry weight (d.w.), with the predominant congeners containing high bromine contents. The levels of TBP, PeBP, TBBPA and BPA were lower than 600 pg g-1 d.w.. Risk assessments indicated that the water and sediments at the sampling locations imposed no estrogenic risk (E2EQ |
| Databáze: | OpenAIRE |
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