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HERO ID
623716
Reference Type
Journal Article
Title
High-resolution atmospheric modeling of fluorotelomer alcohols and perfluorocarboxylic acids in the North American troposphere
Author(s)
Yarwood, G; Kemball-Cook, S; Keinath, M; Waterland, RL; Korzeniowski, SH; Buck, RC; Russell, MH; Washburn, ST
Year
2007
Is Peer Reviewed?
1
Journal
Environmental Science & Technology
ISSN:
0013-936X
EISSN:
1520-5851
Volume
41
Issue
16
Page Numbers
5758-5762
Language
English
PMID
17874783
DOI
10.1021/es0708971
Web of Science Id
WOS:000248886000031
URL
https://search.proquest.com/docview/20558461?accountid=171501
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Abstract
A high spatial and temporal resolution atmospheric model is used to evaluate the potential contribution of fluorotelomer alcohol (FTOH) and perfluorocarboxylate (PFCA) emissions associated with the manufacture, use, and disposal of DuPont fluorotelomer-based products in North America to air concentrations of FTOH, perfluorooctanoic acid (PFOA), and perfluorononanoic acid (PFNA) in North America and the Canadian Arctic. A bottom-up emission inventory for PFCAs and FTOHs was developed from sales and product composition data. A detailed FTOH atmospheric degradation mechanism was developed to simulate FTOH degradation to PFCAs and model atmospheric transport of PFCAs and FTOHs. Modelled PFCA yields from FTOH degradation agree with experimental smog-chamber results supporting the degradation mechanism used. Estimated PFCA and FTOH air concentrations and PFCA deposition fluxes are compared to monitoring data and previous global modelling. Predicted FTOH air concentrations are generally in agreement with available monitoring data. Overall emissions from the global fluorotelomer industry are estimated to contribute approximately 1-2% of the PFCAs in North American rainfall, consistent with previous global emissions estimates. Emission calculations and modelling results indicate that atmospheric inputs of PFCAs in North America from fluorotelomer-based products will decline by an order of magnitude in the near future as a result of current industry commitments to reduce manufacturing emissions and lower the residual fluorotelomer alcohol raw material and trace PFCA product content.
Keywords
Pollution Abstracts; Polar environments; PN, Arctic; Troposphere; Rainfall; Alcohol; raw materials; Emission inventories; Emissions; P 0000:AIR POLLUTION
Tags
PFAS
•
Additional PFAS (formerly XAgency)
•
^Per- and Polyfluoroalkyl Substances (PFAS)
PFNA (375-95-1)
Literature Search
Pubmed
WOS
•
PFAS 150
Literature Search August 2019
PubMed
Not prioritized for screening
Ammonium perfluorooctanoate
Perfluorononanoic acid
Perfluorooctanoic acid
•
PFBA
Protocol References
•
PFNA
Literature Search (August 2017)
Pubmed
Litsearch Update 2017-2018
Toxline
Litsearch Addl Synonyms 2018
WOS
PFNA Literature Search pre-2019
Pubmed
WOS
Literature Search
Pubmed
Toxline
WOS
Screening Results
Excluded/Not on Topic
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