Historical trends of perfluoroalkyl substances (PFASs) in dated sediments from semi-enclosed bays of Korea
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Title
- Historical trends of perfluoroalkyl substances (PFASs) in dated sediments from semi-enclosed bays of Korea
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Author(s)
- Shen, Aihua; Lee, Sunggyu; Ra, Kongtae; Suk, Dongwoo; Moon, Hyo-Bang
- KIOST Author(s)
- Ra, Kongtae(나공태)
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Alternative Author(s)
- 나공태
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Publication Year
- 2018-03
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Abstract
- Information is scarce on historical trends of perfluoroalkyl substances (PFASs) in the coastal environment. In this study, four sediment cores were collected from semi-enclosed bays of Korea to investigate the pollution history, contamination profiles, and environmental burden of PFASs. The total PFAS concentrations in sediment cores ranged from 6.61 to 821 pg/g dry weight. The highest concentrations of PFASs were found in surface or subsurface sediments, indicating on-going contamination by PFASs. Historical trends in PFASs showed a clear increase since the 1980s, which was consistent with the global PFAS consumption pattern. Concentrations of PFASs were dependent on the organic carbon content in sediment cores. PFOS and longer-chain PFASs were predominant in all of the sediment cores. In particular, a large proportion of longer-chain PFASs was observed in the upper layers of the sediment cores from industrialized coastal regions. Inventories and fluxes estimated for PFASs were similar to those for PCDD/Fs.
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ISSN
- 0025-326X
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/999
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DOI
- 10.1016/j.marpolbul.2018.01.039
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Bibliographic Citation
- MARINE POLLUTION BULLETIN, v.128, pp.287 - 294, 2018
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Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
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Subject
- PERFLUORINATED COMPOUNDS; PERFLUOROOCTANE SULFONATE; SPATIAL-DISTRIBUTION; INDUSTRIALIZED BAYS; SURFACE SEDIMENTS; ORGANIC FLUORINE; MARINE-SEDIMENTS; MASAN BAY; WATER; ACIDS
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Keywords
- Pollution history; PFOS; Inventory; Flux; Sediment core
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Type
- Article
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Language
- English
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Document Type
- Article
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