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Rate constants for the reaction of OH radicals with COS, CS2 and CH3SCH3 over the temperature range 299–430 K

✍ Scribed by R. Atkinson; R.A. Perry; J.N. Pitts Jr.

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
414 KB
Volume
54
Category
Article
ISSN
0009-2614

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✦ Synopsis

Rate constants for the reaction of OH radicals vlith COS. CSz and CII~SCHJ, which are invo!ved in the glohal sulfur cycle, iI;IVC been determined over the temperature range 299-430 K uGng a flash ps hotolysis-resonance fluorcsccnu: tcchmque. For COS and CS2 upper limits at room tcmyzraturc of k(COS) < 7 X 10 -7 x 1o--'4 cm3 molecuIe~-' 5 -' and k(CSa) < cm3 moiccule -' s-l were determined, whde ror CH3SCII3 the Arrhenius expression k(CtI$KI!s) = 5.47 x 1O-*2 c?tp[(355 f 3OO)/R7'] cm3 molecule-* s-' was obtained with .z rate mrlstant at room tcmpcmture of (9.8 k 1.2) X IO-** cm3 mokculc-* s-t. 1. Intruduction 2. ExPerimental

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