13827-32-2Relevant articles and documents
Kinetics of the reaction of SH and SD with NO2
Herndon, Scott C.,Ravishankara
, p. 106 - 113 (2008/10/09)
The rate constants for the reactions of NO2 with SH and SD were measured between 250 and 360 K to be 2.8 × 10-11 exp{(270 ± 40)/T(K)} and 2.6 × 10-11 exp{(285 ± 20)/T(K)} cm3 molecule-1 s-1, respectively. SH(SD) radicals were generated by pulsed laser photolysis of H2S(D 2S) or CH3SH and detected via pulsed laser-induced fluorescence. The laser-induced fluorescence excitation spectrum of SH was found to be contaminated by the presence of the SO radical. This contamination is suggested as a possible reason for differences among some of the reported values of k1 in the literature. The title reaction influences the atmospheric lifetime of the SH radical when NO2 is greater than 100 pptv, but the revised value of k1 does not significantly alter our current understanding of SH oxidation in the atmosphere.
Kinetics of the reactions of SH radicals with NO2 and O2
Stachnik, R. A.,Molina, M. J.
, p. 4603 - 4606 (2008/10/08)
The SH + NO2 reaction rate constant was measured by monitoring SH concentrations with long-path optical absorption at 324 nm in a laser photolysis system. At 298 K the rate constant was found to be (4.8 ± 1.0) x 10-11 cm3 molecule-1 s-1. An upper limit of 4 x 10-19 cm3 molecule-1 s-1 was inferred for the SH + O2 reaction, indicating that the atmospheric oxidation of the SH radical may occur via reaction with species such as NO2 and O3.
KINETICS OF THE REACTION OF ATOMIC FLUORINE WITH H2S AND ELEMENTARY REACTIONS OF THE HS RADICAL.
Schoenle,Rahman,Schindler
, p. 66 - 75 (2007/10/02)
The reaction of H//2S with atomic fluorine has been studied in a discharge-flow system at 298 K to generate HS radicals for kinetic investigations. Mass spectrometric detection with single ion counting was employed. The rate constant k(1) was obtained from the rate of H//2S consumption under the condition left bracket H//2S right bracket VM LS TH left bracket F right bracket //0.
