Neutral Poly-/perfluoroalkyl Substances in Air and Snow from the Arctic

Levels of neutral poly-/perfluoroalkyl substances (nPFASs) in air and snow collected from Ny-Ålesund were measured and their air-snow exchange was determined to investigate whether they could re-volatilize into the atmosphere driven by means of air-snow exchange. The total concentration of 12 neutra...

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Autores principales: Xie, Zhiyong, Wang, Zhen, Mi, Wenying, Möller, Axel, Wolschke, Hendrik, Ebinghaus, Ralf
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4352854/
https://www.ncbi.nlm.nih.gov/pubmed/25746440
http://dx.doi.org/10.1038/srep08912
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author Xie, Zhiyong
Wang, Zhen
Mi, Wenying
Möller, Axel
Wolschke, Hendrik
Ebinghaus, Ralf
author_facet Xie, Zhiyong
Wang, Zhen
Mi, Wenying
Möller, Axel
Wolschke, Hendrik
Ebinghaus, Ralf
author_sort Xie, Zhiyong
collection PubMed
description Levels of neutral poly-/perfluoroalkyl substances (nPFASs) in air and snow collected from Ny-Ålesund were measured and their air-snow exchange was determined to investigate whether they could re-volatilize into the atmosphere driven by means of air-snow exchange. The total concentration of 12 neutral PFASs ranged from 6.7 to 39 pg m(−3) in air and from 330 to 690 pg L(−1) in snow. A significant log-linear relationship was observed between the gas/particle partition coefficient and vapor pressure of the neutral PFASs. For fluorotelomer alcohol (FTOHs) and fluorotelomer acrylates (FTAs), the air-snow exchange fluxes were positive, indicating net evaporative from snow into air, while net deposition into snow was observed for perfluorooctane sulfonamidoethanols (Me/EtFOSEs) in winter and spring of 2012. The air-snow exchange was snow-phase controlled for FTOHs and FTAs, and controlled by the air-phase for FOSEs. Air-snow exchange may significantly interfere with atmospheric concentrations of neutral PFASs in the Arctic.
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spelling pubmed-43528542015-03-17 Neutral Poly-/perfluoroalkyl Substances in Air and Snow from the Arctic Xie, Zhiyong Wang, Zhen Mi, Wenying Möller, Axel Wolschke, Hendrik Ebinghaus, Ralf Sci Rep Article Levels of neutral poly-/perfluoroalkyl substances (nPFASs) in air and snow collected from Ny-Ålesund were measured and their air-snow exchange was determined to investigate whether they could re-volatilize into the atmosphere driven by means of air-snow exchange. The total concentration of 12 neutral PFASs ranged from 6.7 to 39 pg m(−3) in air and from 330 to 690 pg L(−1) in snow. A significant log-linear relationship was observed between the gas/particle partition coefficient and vapor pressure of the neutral PFASs. For fluorotelomer alcohol (FTOHs) and fluorotelomer acrylates (FTAs), the air-snow exchange fluxes were positive, indicating net evaporative from snow into air, while net deposition into snow was observed for perfluorooctane sulfonamidoethanols (Me/EtFOSEs) in winter and spring of 2012. The air-snow exchange was snow-phase controlled for FTOHs and FTAs, and controlled by the air-phase for FOSEs. Air-snow exchange may significantly interfere with atmospheric concentrations of neutral PFASs in the Arctic. Nature Publishing Group 2015-03-09 /pmc/articles/PMC4352854/ /pubmed/25746440 http://dx.doi.org/10.1038/srep08912 Text en Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Xie, Zhiyong
Wang, Zhen
Mi, Wenying
Möller, Axel
Wolschke, Hendrik
Ebinghaus, Ralf
Neutral Poly-/perfluoroalkyl Substances in Air and Snow from the Arctic
title Neutral Poly-/perfluoroalkyl Substances in Air and Snow from the Arctic
title_full Neutral Poly-/perfluoroalkyl Substances in Air and Snow from the Arctic
title_fullStr Neutral Poly-/perfluoroalkyl Substances in Air and Snow from the Arctic
title_full_unstemmed Neutral Poly-/perfluoroalkyl Substances in Air and Snow from the Arctic
title_short Neutral Poly-/perfluoroalkyl Substances in Air and Snow from the Arctic
title_sort neutral poly-/perfluoroalkyl substances in air and snow from the arctic
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4352854/
https://www.ncbi.nlm.nih.gov/pubmed/25746440
http://dx.doi.org/10.1038/srep08912
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