FTIR relative rate constants of the reactions of ethyl and methyl sulfide with OH radicals and Cl atoms

G. OKSDATH-MANSILLA, A.B. PEÑÉÑORY, M. ALBU, I. BARNES, P. WIESEN AND M. A TERUEL

Elsevier

Año: 2009 vol. 477 p. 22 - 22

elative rate coefficients (in cm3 molecule1 s1) for the gas-phase reactions of OH radicals and Cl atoms with diethyl sulfide (DES) and ethyl methyl sulfide (EMS) have been determined at 298 K and atmospheric pressure using long path in situ FTIR analysis: kðOH þ DESÞ ¼ ð1:65 0:71Þ 1011; kðCl þ DESÞ ¼ ð3:14 0:89Þ 1010; kðOH þ EMSÞ ¼ ð1:11 0:29Þ 1011; kðCl þ EMSÞ ¼ ð3:06 0:42Þ 1010: The rate coefficients did not show any dependence on the oxygen partial pressure and are compared with previous determinations. Reactivity trends and atmospheric implications are discussed.