DOES THE HO2 RADICAL REACT WITH H2S, CH3SH, AND CH3SCH3

被引：20
|
作者：
MELLOUKI, A
RAVISHANKARA, AR
机构：
[1] NOAA,AERON LAB,BOULDER,CO 80303
[2] UNIV COLORADO,COOPERAT INST RES ENVIRONM SCI,BOULDER,CO 80309
来源：
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS | 1994年 / 26卷 / 03期
关键词：
D O I：
10.1002/kin.550260306
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The kinetics of the title reactions were investigated in a discharge flow tube by using laser magnetic resonance detection of HO2. The upper limits for the bimolecular rate constants for the reactions of HO2 with H2S (k1), CH3SH (k2), and CH3SCH3 (k3) are <3 X 10(-15), <4 X 10(-15), and <5 x 10(-15) cm3 molecule-1 s-1, respectively, at 298 K. Our upper limit for kl is three orders of magnitude lower than the previously reported value. Measurements at higher temperatures also yield similar upper limits. Our results suggest that HO2 is not an important oxidant for these reduced compounds in the atmosphere. (C) 1994 John Wiley & Sons, Inc.
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页码：355 / 365
页数：11
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