PMID: 16646459May 2, 2006Paper

Atmospheric lifetime and global warming potential of a perfluoropolyether

Environmental Science & Technology
Cora J YoungScott A Mabury

Abstract

Perfluoropolyethers (PFPEs) are a family of perfluorinated fluids used mainly in industrial applications. Lower molecular weight commercial PFPE fractions have boiling points ranging between 55 and 270 degrees C, and have the potential to escape into the atmosphere. To improve our understanding of the atmospheric chemistry of PFPEs, a distilled fraction of a commercial mixture containing perfluoropolymethylisopropyl ethers (PFPMIEs) was introduced into an atmospheric chamber system. Relative rate techniques were used to determine upper limits for the rate constants for reactions of OH and Cl with PFPMIE in 700 Torr of air at 296 K. The reactivity of PFPMIE with Cl was less than 2 x 10(-17) cm3 molecule(-1) s(-1), while the reactivity with OH was less than 6.8 x 10(-16) cm3 molecule(-1) s(-1), indicating low reactivity in the troposphere. Consequently, the lifetime of PFPMIE should be limited bytransport to the mesosphere, where photolysis by Lyman-alpha radiation at 121.6 nm will be efficient. By analogy to perfluorinated alkanes, the lower limit for the total atmospheric lifetime is 800 years. PFPMIE was shown to have instantaneous radiative forcing of 0.65 W m(-2) ppb(-1), which corresponds to a global warming potential on a ...Continue Reading

Citations

Nov 1, 2015·Journal of the American Society for Mass Spectrometry·Ian Ken DimzonPim de Voogt
Mar 17, 2017·Environmental Science and Pollution Research International·Jing MengQifeng Li
Jul 25, 2017·Ultrasonics Sonochemistry·Kazuhiko SekiguchiKenshi Sankoda
Oct 29, 2010·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Mads P Sulbaek AndersenTimothy J Wallington
Aug 2, 2007·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Roger A Pielke
Mar 9, 2007·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·S R WilsonX Tang
Apr 1, 2021·Colloid and Polymer Science·Giuseppe TrusianoRoberta Bongiovanni
Jul 20, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Kerri A DenkenbergerKarl T Mueller
Jul 27, 2021·Environmental Science & Technology Letters·Carol F KwiatkowskiArlene Blum

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