Atmospheric degradation of 2-chloroethyl vinyl ether, allyl ether and allyl ethyl ether: Kinetics with OH radicals and UV photochemistry

ANTIÑOLO, M.; OCAÑA, A.J.; ARANGUREN, J.P.; LANE, S.I.; ALBALADEJO, J.; JIMÉNEZ, E.

CHEMOSPHERE

PERGAMON-ELSEVIER SCIENCE LTD

Año: 2017 vol. 181 p. 232 - 232

0045-6535

nsaturated ethers are oxygenated volatile organic compounds (OVOCs) emitted by anthropogenic sources. Potential removal processes in the troposphere are initiated by hydroxyl (OH) radicals and photochemistry. In this work, we report for the first time the rate coefficients of the gas-phase reaction with OH radicals (kOH) of 2-chloroethyl vinyl ether (2ClEVE), allyl ether (AE), and allyl ethyl ether (AEE) as a function of temperature in the 263?358 K range, measured by the pulsed laser photolysis?laser induced fluorescence technique. No pressure dependence of kOH was observed in the 50?500 Torr range in He as bath gas, while a slightly negative T-dependence was observed. The temperature dependent expressions for the rate coefficients determined in this work are: kOH,2ClEVE(T)=(9.0±2.0)×10−12exp(478±72T)cm3molecule−1s−1, kOH,AE(T)=(1.3±0.4)×10−11exp(442±91T)cm3molecule−1s−1, kOH,AEE(T)=(5.8±1.3)×10−12exp(563±62T)cm3molecule−1s−1, The