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3856455 
Journal Article 
Atmospheric chlorinated polyfluorinated ether sulfonate and ionic perfluoroalkyl acids in 2006 to 2014 in Dalian, China 
Liu, W; Qin, H; Li, J; Zhang, Q; Zhang, H; Wang, Z; He, X 
2017 
Yes 
Environmental Toxicology and Chemistry
ISSN: 0730-7268
EISSN: 1552-8618 
36 
10 
2581-2586 
English 
Chlorinated polyfluorinated ether sulfonate (Cl-PFESA; trade name F-53B) is an alternative product for perfluorooctane sulfonate (PFOS) used in metal plating; little is known about its levels in the environment and its risks. To our knowledge, the present study constitutes the first report of Cl-PFESA in the atmosphere. In 2006 to 2014, C8 Cl-PFESA, along with ionic perfluoroalkyl acids (PFAAs), was detected in atmospheric particulate matter in Dalian, China. Concentrations of C8 Cl-PFESA increased from 140 pg/m(3) in 2007 to 722 pg/m(3) in 2014. Levels of 11 (total) ionic PFAAs increased in 2006 to 2008 and decreased afterward, with a range of 35.7 to 860 pg/m(3) . The PFAAs in the particulate matter were dominated by perfluorocarboxylates, with perfluorooctanoate detected at the highest concentration at a mean level of 71.7 pg/m(3) , followed by perfluoroheptanoate and perfluorohexanoate. Perfluorosulfonates were detected at lower levels, with mean concentrations of PFOS, perfluorobutanesulfonate, and perfluorohexane sulfonate of 5.73, 1.64, and 1.24 pg/m(3) , respectively. Back-trajectory analysis suggested that the air mass approaching Dalian during the sampling originated from the northwest, where fluorochemical industry parks and metal plating industries are densely located. No significant correlation was observed between Cl-PFESA and the ionic PFAAs. The relatively high Cl-PFESA concentrations suggested that it possibly contributed largely to the previously reported exposure to undefined organic fluorine compounds, for which further research on emission and environmental risks is needed. Environ Toxicol Chem 2016;9999:1-6. © 2017 SETAC. 
Perfluoroalkyl substance; Air pollution; Atmospheric transport; Chlorinated polyfluorinated ether sulfonates; Temporal trend 
• ^Per- and Polyfluoroalkyl Substances (PFAS)
     PFOA (335-67-1) and PFOS (1763-23-1)
          Literature Search – Adverse outcome pathway (2015-present)
               Pubmed
     PFBS (375-73-5)
          Literature Search
               Pubmed
     PFHpA (375-85-9)
          Literature Search
               Pubmed
     PFHxA (307-24-4)
          Literature Search
               Pubmed
• PFBS
          Pubmed
          Excluded/Not on Topic
     Search
          PubMed
          WOS
     Excluded
          PubMed
          WOS
• PFHpA
     Literature Search
          Pubmed
     Screening Results
          Excluded/Not on Topic
• PFHxA
     Literature Search
          Pubmed
     Literature Search: February 2018 Update
          Toxline
          WoS
          Term Set 2: Initial Search
     Screening Results
          Excluded/Not on Topic
     Title and Abstract Screening
          Excluded
               Not relevant to PECO
     Literature Search
          Pubmed
          WOS
          Toxline
• PFNA
     Literature Search
          Pubmed
          Toxline
     PFNA May 2019 Update
          Toxnet
     Title and Abstract Screening
          Excluded
               Not relevant to PECO
• PFOA (335-67-1) and PFOS (1763-23-1)
     Literature Search – Adverse outcome pathway (2015-present)
          Pubmed
     Screening Results
          Excluded/Not on Topic
     Literature Search Update (2013-2019)
          PubMed
          WOS