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6320589 
Journal Article 
Spatiotemporal distribution, sources and ecological risks of perfluorinated compounds (PFCs) in the Guanlan River from the rapidly urbanizing areas of Shenzhen, China 
Wu, J; Junaid, M; Wang, Z; Sun, W; Xu, N 
2020 
Yes 
Chemosphere
ISSN: 0045-6535
EISSN: 1879-1298 
Elsevier 
245 
Elsevier 
125637 
English 
Limited studies have demonstrated the environmental concerns of perfluorinated compounds (PFCs) in the rivers flowing through the rapidly urbanizing areas. Therefore, this study aims to investigate the spatial and temporal distribution, major sources and ecological risks of PFCs in the surface water samples, collecting from the Guanlan River, Shenzhen, China. The concentrations of ∑PFCs ranged from 11.3 to 384 ng/L, with a mean value of 81.8 ng/L in the dry season, and ranged from 6.90 to 619 ng/L, with a mean value of 339 ng/L in the wet season. Short-chain PFCs such as perfluorohexane sulfonate (PFHxS) and perfluorobutane sulfonate (PFBS) were detected as the predominant compounds. Further, the spatiotemporal distribution revealed significantly higher levels of PFCs in the wet season than those in the dry season, and relatively higher levels in the tributaries than those in the mainstream. Source apportionment highlighted the industrial discharges, domestic wastewater, precipitation, and wastewater treatment plants as the major sources of PFCs. Moreover, the population density and associated urban sewage emissions observed as important indicators for PFCs uneven distribution in the area. The ecological risk assessment revealed perfluorotetradecanoic acid (PFTA, C14) posed high ecological risks to the aquatic organisms (especially for mysid) in the Guanlan River. Taken all together, this study not only unveiled the characteristics of PFCs contamination in the rapidly urbanizing catchment, but also provided the baseline data for policy makers to protect the ecological environment of the urban rivers in the rapidly growing area. 
Fluorocarbons; Waste Water; Water Pollutants, Chemical; perflexane; FX3WJ41CMX; perfluorobutane; SE4TWR0K2C; Index Medicus; Urban river; Potential sources; Ecological risks; Spatiotemporal distribution; Risk Assessment; Urbanization; Ecology; Seasons; Environmental Monitoring; Water Pollutants, Chemical -- analysis; Fluorocarbons -- analysis 
• PFBS
     LitSearch: May 2019 - May 2020
          WoS
          PubMed
• PFHxS
     LitSearch: May 2019 - May 2020
          PubMed
          WoS
• PFOA (335-67-1) and PFOS (1763-23-1)
     LitSearch: Feb 2019 - May 2020
          WoS
     Literature Search Update (Apr 2019 - Sep 2020)
          WOS