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Levels and Seasonal...
Levels and Seasonal Trends of C1-C4 Perfluoroalkyl Acids and the Discovery of Trifluoromethane Sulfonic Acid in Surface Snow in the Arctic
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- Björnsdotter, Maria, 1989- (författare)
- Örebro universitet,Institutionen för naturvetenskap och teknik,Man-Technology-Environment Research Centre (MTM)
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- Hartz, William F. (författare)
- Department of Earth Sciences, University of Oxford, South Parks Road, Oxford, United Kingdom; Department of Arctic Geology, University Centre in Svalbard (UNIS), Longyearbyen, Svalbard, Norway
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- Kallenborn, Roland (författare)
- Faculty of Chemistry, Biotechnology and Food Sciences (KBM), Norwegian University of Life Sciences (NMBU), Ås, Norway; Department of Arctic Technology, University Centre in Svalbard (UNIS), Longyearbyen, Svalbard, Norway
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- Ericson Jogsten, Ingrid, 1980- (författare)
- Örebro universitet,Institutionen för naturvetenskap och teknik,Man-Technology-Environment Research Centre (MTM
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- Humby, Jack D. (författare)
- Ice Dynamics and Paleoclimate, British Antarctic Survey, High Cross, Cambridge, United Kingdom
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- Kärrman, Anna, 1975- (författare)
- Örebro universitet,Institutionen för naturvetenskap och teknik,Man-Technology-Environment Research Centre (MTM)
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- Yeung, Leo W. Y., 1981- (författare)
- Örebro universitet,Institutionen för naturvetenskap och teknik,Man-Technology-Environment Research Centre (MTM)
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(creator_code:org_t)
- 2021-11-15
- 2021
- Engelska.
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Ingår i: Environmental Science and Technology. - : American Chemical Society (ACS). - 0013-936X .- 1520-5851. ; 55:23, s. 15853-15861
- Relaterad länk:
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https://doi.org/10.1...
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https://pubs.acs.org...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- C1-C4 perfluoroalkyl acids (PFAAs) are highly persistent chemicals that have been found in the environment. To date, much uncertainty still exists about their sources and fate. The importance of the atmospheric degradation of volatile precursors to C1-C4 PFAAs were investigated by studying their distribution and seasonal variation in remote Arctic locations. C1-C4 PFAAs were measured in surface snow on the island of Spitsbergen in the Norwegian Arctic during January-August 2019. Trifluoroacetic acid (TFA), perfluoropropanoic acid (PFPrA), perfluorobutanoic acid (PFBA), and trifluoromethane sulfonic acid (TFMS) were detected in most samples, including samples collected at locations presumably receiving PFAA input solely from long-range processes. The flux of TFA, PFPrA, PFBA, and TFMS per precipitation event was in the ranges of 22-1800, 0.79-16, 0.19-170, and 1.5-57 ng/m2, respectively. A positive correlation between the flux of TFA, PFPrA, and PFBA with downward short-wave solar radiation was observed. No correlation was observed between the flux of TFMS and solar radiation. These findings suggest that atmospheric transport of volatile precursors and their subsequent degradation plays a major role in the global distribution of C2-C4 perfluoroalkyl carboxylic acids and their consequential deposition in Arctic environments. The discovery of TFMS in surface snow at these remote Arctic locations suggests that TFMS is globally distributed. However, the transport mechanism to the Arctic environment remains unknown.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Nyckelord
- perfluoroalkyl substances
- ultrashort-chain perfluoroalkyl acids
- trifluoroacetic acid
- solar radiation
- atmospheric oxidation
- atmospheric deposition
- precursors
- Arctic
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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