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Atmospheric chemistry of (CF3)2CFOCH3

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JournalChemical Physics Letters
DatePublished - 27 Jun 2014
Volume607
Number of pages5
Pages (from-to)5-9
Original languageEnglish

Abstract

FTIR smog chamber techniques were used to measure k(Cl + (CF3)2CFOCH3) = (1.80 ± 0.42) × 10-13, k(Cl + (CF3)2CFOCHO) = (1.47 ± 0.56) × 10-14 , and k(OH + (CF3)2CFOCH3) = (1.55 ± 0.24) × 10-14 cm3 molecule-1 s-1 . The chlorine-atom initiated oxidation of (CF3)2CFOCH3 in air in the absence of NOX results in conversion of (CF3)2CFOCH3 into the formate, (CF3)2CFOCHO, in a yield indistinguishable from 100%. In the presence of NOX , the (CF3)2CFOCHO yield was decreased by approximately 17%, which we attribute to the formation of peroxy and/or alkoxy nitrates. The atmospheric lifetime of (CF3)2CFOCH3 was estimated to 3.7 years. The infrared spectrum of (CF3)2CFOCH3 was measured and a global warming potential GWP 100 = 354 was determined.

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