Historical trends of perfluoroalkyl substances (PFASs) in dated sediments from semi-enclosed bays of Korea
- Authors
- Shen, Aihua; Lee, Sunggyu; Ra, Kongtae; Suk, Dongwoo; Moon, Hyo-Bang
- Issue Date
- Mar-2018
- Publisher
- Pergamon Press Ltd.
- Keywords
- Pollution history; PFOS; Inventory; Flux; Sediment core
- Citation
- Marine Pollution Bulletin, v.128, pp.287 - 294
- Indexed
- SCIE
SCOPUS
- Journal Title
- Marine Pollution Bulletin
- Volume
- 128
- Start Page
- 287
- End Page
- 294
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/6735
- DOI
- 10.1016/j.marpolbul.2018.01.039
- ISSN
- 0025-326X
- 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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