Rate constants for the reaction of ozone with <Emphasis Type="Italic">n</Emphasis>-butyl, <Emphasis Type="Italic">s</Emphasis>-butyl and <Emphasis Type="Italic">t</Emphasis>-butyl methyl sulfides

The rate constants for the ozone reactions with n-butyl methyl sulfide (n-BMS, CH₃CH₂CH₂CH₂SCH₃), sec-butyl methyl sulfide (s-BMS, CH₃CH₂(CH₃)CHSCH₃) and tert-butyl methyl sulfide (t-BMS, (CH₃)₃CSCH₃) were measured using our smog chamber under supposedly pseudo-first-order conditions at 300±2 K and 760 Torr. The experimental determined rate constants for n-butyl, s-butyl and t-butyl methyl sulfide are (1.23 ± 0.06)×10⁻¹⁹, (5.08 ± 0.19)×10⁻²⁰ and (2.26 ± 0.14)×10⁻²⁰ cm³·molecule⁻¹·s⁻¹, respectively. The reactivity-structure relationship of the reactions was discussed and used to illustrate the mechanism of the ozone reaction with thioethers. The results enrich the kinetics data of atmospheric chemistry. Supported by Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. KZCX2-YW-205), National Basic Research Program of China (973 Program) (Grant No. 2006CB403701), and National Natural Science Foundation of China (Grant Nos. 20577052 and 20673123)