Temporal trends and transport of perfluoroalkyl substances (PFASs) in a subtropical estuary: Jiulong River Estuary, Fujian, China
Abstract
The seasonal variations and spatial distributions of fifteen perfluoroalkyl substances (PFASs) were investigated in the water of the subtropical Jiulong River Estuary (JRE) in Fujian, China. The concentrations and composition profiles of PFASs showed significant seasonal variations. ∑PFASs concentrations ranged from 4.8 to 37.6 ng L -1 , 12.2 to 110 ng L -1 and 3.3 to 43.0 ng L -1 in the dry, medium and wet seasons, respectively. Perfluorooctane sulfonate (PFOS) was found to be the most abundant PFAS in the dry season, with a composition of 33% ± 5%, Perfluorohexanoic acid PFHxA (47% ± 13%) and perfluoropentanoic acid (PFPeA) (52% ± 15%) were the dominant compounds in the medium and wet seasons, respectively. Seasonal and spatial distributions of ∑PFASs were different in the upstream and downstream sections. High concentration of PFHxA occurred in the medium season, and showed a linear decreasing trend from upstream to downstream. The majority of other PFASs did not show clear seasonal variation. Composition profiles indicated that the JRE was mainly contaminated by short-chain perfluoroalkyl carboxylic acids (PFCAs), shipbuilding industry, multiple wastewater and river runoff were identified as major potential sources.
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A decrease in PFHxA and PFOA concentrations was observed when river discharge was highest, and PFOS dominated in the dry season.
“A decrease in PFHxA and PFOA concentrations was observed when the river discharge was highest and PFOS were observed to dominate in the dry season.”
From Per and poly-fluoroalkyl substances (PFAS) as a contaminant of emerging concern in surface water: A transboundary review of their occurrences and toxicity effects (2021) · cites this paper as Cai et al., 2018
Short-chain PFAS (PFHxA, PFBS) were prevalent in the Jiulong River estuary and Yangtze River estuary in China.
“Similar observations were reported in the study by Cai et al. (2018) and Pan et al. (2014) in the Jiulong River estuary and Yangtze River estuary in China, where short-chain PFAS (PFHxA, PFBS) were prevalent.”
From Per and poly-fluoroalkyl substances (PFAS) as a contaminant of emerging concern in surface water: A transboundary review of their occurrences and toxicity effects (2021) · cites this paper as Cai et al., 2018
Cai et al. concluded that seasonal pattern can be influenced by runoff and location of point and non-point sources.
“Cai et al. (2018) concluded that seasonal pattern can be influenced by runoff and location of point and non-point sources.”
From Per and poly-fluoroalkyl substances (PFAS) as a contaminant of emerging concern in surface water: A transboundary review of their occurrences and toxicity effects (2021) · cites this paper as Cai et al., 2018
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References 69 · Cited by 83
- Authors
- Cai, Y., Wang, X., Wu, Y., Zhao, S., Li, Y., Ma, L., Chen, C., Huang, J., & Yu, G.
- Affiliations
- Xiamen University (CN)
- State Key Joint Laboratory of Environment Simulation and Pollution Control (CN)
- Corresponding author
- Wang, Xinhong
- Venue
- Science of The Total Environment
- Publisher
- Elsevier BV
- Published
- 2018-10
- Volume
- 639
- Pages
- 263-270
- ISSN
- 0048-9697 (ISSN-L)
- OpenAlex
- W2804714067
- Cited by
- 83
- References
- 69
- Citations by year
- 2026: 8 · 2025: 17 · 2024: 11 · 2023: 9 · 2022: 13 · 2021: 10 · 2020: 5 · 2019: 9
- FWCI
- 3.12
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The Science of The Total Environment (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Marine Public Welfare Projects of China (201105013)
- Tsinghua University for providing for support of sample analysis
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
- Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Fluorine in Organic Chemistry
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
- Keywords
- perfluorinated compounds, PFAS contamination, Jiulong River Estuary, seasonal variation, spatial distribution, PFOS, perfluorohexanoic acid, PFPeA, source apportionment, shipbuilding, wastewater, river discharge, estuarine water pollution
- MeSH terms
- China, Environmental Monitoring, Fluorocarbons, Water Pollutants, Chemical, Alkanesulfonic Acids, Estuaries
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