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| Main Authors: | , , , , , , , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Water research
2025
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/40614498/ |
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| _version_ | 1868266181677285376 |
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| author | Tang, Bin Peng, Can Zhou, Dong-Jing Wu, Kai-Yi Tian, Fei Chen, Hai-Gang Zhang, Shi-Yi Li, Bo-Wen Hu, Guo-Cheng Ren, Ming-Zhong Zheng, Jing |
| author_facet | Tang, Bin Peng, Can Zhou, Dong-Jing Wu, Kai-Yi Tian, Fei Chen, Hai-Gang Zhang, Shi-Yi Li, Bo-Wen Hu, Guo-Cheng Ren, Ming-Zhong Zheng, Jing Tang, Bin Peng, Can Zhou, Dong-Jing Wu, Kai-Yi Tian, Fei Chen, Hai-Gang Zhang, Shi-Yi Li, Bo-Wen Hu, Guo-Cheng Ren, Ming-Zhong Zheng, Jing |
| collection | PubMed - marine biology |
| contents | Distribution, partitioning behaviors, and source identification of legacy and emerging per- and polyfluorinated alkyl substances in the Pearl River Estuary, South China. Tang, Bin Peng, Can Zhou, Dong-Jing Wu, Kai-Yi Tian, Fei Chen, Hai-Gang Zhang, Shi-Yi Li, Bo-Wen Hu, Guo-Cheng Ren, Ming-Zhong Zheng, Jing Estuaries Fluorocarbons Environmental Pollutants Seawater China Geologic Sediments Environmental Monitoring Estuaries serve as a sink for land-based pollutants like legacy per- and polyfluoroalkyl substances (PFASs), however, the environmental behaviors of emerging PFASs (ePFASs) remain largely unknown. This study investigated the occurrence, behaviors, and sources of 18 legacy PFASs and 13 ePFASs across the Pearl River Estuary (PRE). The results indicated that the total concentrations of PFASs (ΣPFASs) in seawater, suspended particulate matter (SPM), and sediment ranged from 1.20 to 25.6 ng/L, not detected (ND) to 635 ng/g dry weight (dw), and 0.93 to 6.84 ng/g dw, respectively. Perfluorooctanoate (PFOA) was the dominant chemical (25.4 %) in seawater, while sodium p-perfluorooctanoate nonenoxybenzene sulfonate (PFNOBS) for SPM (75.0 %) and sediment (37.9 %). PFASs exhibited a nearshore-to-offshore decreasing trend in seawater, while significant enrichment was observed in SPM and sediment at the river-sea junction, primarily attributed to urban/industrial discharges and the "marginal filtration effect". Partition coefficients (log K, log K, and log K) exhibited strong linear correlations with carbon chain length of PFASs, indicated that long-chain PFASs were more readily adsorbed by the solid phase. SPM-mediated transport significantly enhanced long-chain PFAS distribution (log K =1.85-4.73), while salinity negatively influenced K of short-chain PFCAs (p < 0.05). Source apportionment analysis revealed the diverse sources of PFASs, including electronics, electroplating, textiles, papermaking, food packaging and emerging fluorochemical manufacturing, which aligns with PFAS releases from industrial processes and commercial products within the Pearl River Delta. Overall low ecological risk of PFASs was observed in the PRE, yet legacy PFOA and emerging substances, including 6:2 fluorotelomer sulfonic acid (6:2 FTSA), hexafluoropropylene oxide trimer acid (HFPO-TA), and PFNOBS, warrant attention due to their potential accumulation potential and associated risks. This study underscores the critical role of SPM in PFAS dynamics and provides significant insights into the partitioning behavior and sources of PFASs, particularly ePFASs, within estuarine aquatic systems. |
| format | Artículo científico |
| id | pubmed_40614498 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Water research |
| record_format | pubmed |
| spellingShingle | Distribution, partitioning behaviors, and source identification of legacy and emerging per- and polyfluorinated alkyl substances in the Pearl River Estuary, South China. Tang, Bin Peng, Can Zhou, Dong-Jing Wu, Kai-Yi Tian, Fei Chen, Hai-Gang Zhang, Shi-Yi Li, Bo-Wen Hu, Guo-Cheng Ren, Ming-Zhong Zheng, Jing Estuaries Fluorocarbons Environmental Pollutants Seawater China Geologic Sediments Environmental Monitoring Distribution, partitioning behaviors, and source identification of legacy and emerging per- and polyfluorinated alkyl substances in the Pearl River Estuary, South China. Tang, Bin Peng, Can Zhou, Dong-Jing Wu, Kai-Yi Tian, Fei Chen, Hai-Gang Zhang, Shi-Yi Li, Bo-Wen Hu, Guo-Cheng Ren, Ming-Zhong Zheng, Jing Estuaries Fluorocarbons Environmental Pollutants Seawater China Geologic Sediments Environmental Monitoring Estuaries serve as a sink for land-based pollutants like legacy per- and polyfluoroalkyl substances (PFASs), however, the environmental behaviors of emerging PFASs (ePFASs) remain largely unknown. This study investigated the occurrence, behaviors, and sources of 18 legacy PFASs and 13 ePFASs across the Pearl River Estuary (PRE). The results indicated that the total concentrations of PFASs (ΣPFASs) in seawater, suspended particulate matter (SPM), and sediment ranged from 1.20 to 25.6 ng/L, not detected (ND) to 635 ng/g dry weight (dw), and 0.93 to 6.84 ng/g dw, respectively. Perfluorooctanoate (PFOA) was the dominant chemical (25.4 %) in seawater, while sodium p-perfluorooctanoate nonenoxybenzene sulfonate (PFNOBS) for SPM (75.0 %) and sediment (37.9 %). PFASs exhibited a nearshore-to-offshore decreasing trend in seawater, while significant enrichment was observed in SPM and sediment at the river-sea junction, primarily attributed to urban/industrial discharges and the "marginal filtration effect". Partition coefficients (log K, log K, and log K) exhibited strong linear correlations with carbon chain length of PFASs, indicated that long-chain PFASs were more readily adsorbed by the solid phase. SPM-mediated transport significantly enhanced long-chain PFAS distribution (log K =1.85-4.73), while salinity negatively influenced K of short-chain PFCAs (p < 0.05). Source apportionment analysis revealed the diverse sources of PFASs, including electronics, electroplating, textiles, papermaking, food packaging and emerging fluorochemical manufacturing, which aligns with PFAS releases from industrial processes and commercial products within the Pearl River Delta. Overall low ecological risk of PFASs was observed in the PRE, yet legacy PFOA and emerging substances, including 6:2 fluorotelomer sulfonic acid (6:2 FTSA), hexafluoropropylene oxide trimer acid (HFPO-TA), and PFNOBS, warrant attention due to their potential accumulation potential and associated risks. This study underscores the critical role of SPM in PFAS dynamics and provides significant insights into the partitioning behavior and sources of PFASs, particularly ePFASs, within estuarine aquatic systems. |
| title | Distribution, partitioning behaviors, and source identification of legacy and emerging per- and polyfluorinated alkyl substances in the Pearl River Estuary, South China. |
| topic | Estuaries Fluorocarbons Environmental Pollutants Seawater China Geologic Sediments Environmental Monitoring |
| url | https://pubmed.ncbi.nlm.nih.gov/40614498/ |