PMID: 16509330Mar 3, 2006Paper

Atmospheric chemistry of perfluoroalkanesulfonamides: kinetic and product studies of the OH radical and Cl atom initiated oxidation of N-ethyl perfluorobutanesulfonamide

Environmental Science & Technology
Jonathan W MartinTimothy J Wallington

Abstract

Perfluorooctanesulfonamides [C8F17SO2N(R1)(R2)] are present in the atmosphere and may, via atmospheric transport and oxidation, contribute to perfluorocarboxylates (PFCA) and perfluorooctanesulfonate (PFOS) pollution in remote locations. Smog chamber experiments with the perfluorobutanesulfonyl analogue N-ethyl perfluorobutanesulfonamide [NEtFBSA; C4F9SO2N(H)CH2CH3] were performed to assess this possibility. By use of relative rate methods, rate constants for reactions of NEtFBSA with chlorine atoms (296 K) and OH radicals (301 K) were determined to be kCL) = (8.37 +/- 1.44) x 10(-12) and kOH = (3.74 +/- 0.77) x 10(-13) cm3 molecule(-1) s(-1), indicating OH reactions will be dominant in the troposphere. Simple modeling exercises suggestthat reaction with OH radicals will dominate removal of perfluoroalkanesulfonamides from the gas phase (wet and dry deposition will not be important) and that the atmospheric lifetime of NEtFBSA in the gas phase will be 20-50 days, thus allowing substantial long-range atmospheric transport. Liquid chromatography/tandem mass spectrometry (LC/MS/MS) analysis showed that the primary products of chlorine atom initiated oxidation were the ketone C4F9SO2N(H)COCH3; aldehyde 1, C4F9SO2N(H)CH2CHO; and a p...Continue Reading

References

May 12, 2001·Environmental Science & Technology·J P Giesy, K Kannan
Sep 12, 2003·Environmental Science & Technology·D A EllisT J Wallington
Mar 30, 2004·Environmental Science & Technology·Mahiba ShoeibKurunthachalam Kannan
Jan 27, 2005·Environmental Science & Technology·Amila O De Silva, Scott A Mabury

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Citations

Jan 16, 2007·Analytical and Bioanalytical Chemistry·Annika JahnkeChristian Temme
May 3, 2013·Environmental Science and Pollution Research International·Zhiyong XieRalf Ebinghaus
Jul 19, 2011·Environmental Science & Technology·Jonathan P BenskinJonathan W Martin
Sep 13, 2011·Environmental Science & Technology·Claudia E MüllerDerek C G Muir
Aug 2, 2011·Environmental Science & Technology·Jun LiKevin C Jones
Sep 3, 2011·Environmental Science & Technology·Yuan WangJonathan W Martin
Dec 2, 2011·Environmental Science & Technology·Minghong CaiZhiyong Xie
May 3, 2012·Environmental Science & Technology·Jonathan P BenskinNobuyoshi Yamashita
Nov 30, 2011·TheScientificWorldJournal·Theodore Chao LimGang Yu
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Dec 30, 2014·The Science of the Total Environment·Zhen ZhaoRalf Ebinghaus
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Oct 7, 2008·Chemosphere·Robin VestergrenMartin Scheringer
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Jun 14, 2014·Environmental Toxicology and Chemistry·Lutz Ahrens, Mirco Bundschuh
Feb 27, 2010·Environmental Pollution·Annekatrin DreyerRalf Ebinghaus

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