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A temperature dependent kinetic study of the reaction of the hydroxyl radical with CH2BrRate constants have been measured for the gas phase reaction of the hydroxyl radical (OH) with CH3Br over the temperature range 250 to 400 K. The Arrhenius expression k = (5.79 x 10 exp -12) exp(-1560/T) cu cm/molecule per sec was derived from the kinetic data. From the rate constant at 277 K, the tropospheric lifetime of CH3Br with respect to reaction with OH is estimated to be 2.2 years and the overall atmospheric lifetime to be 2.1 years.
Document ID
19930040392
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Zhang, Zhengyu
(NASA Headquarters Washington, DC United States)
Saini, Rameshwar D.
(NASA Headquarters Washington, DC United States)
Kurylo, Michael
(NASA Headquarters Washington, DC United States)
Huie, Robert E.
(NIST, Chemical Kinetics and Thermodynamics Div., Gaithersburg MD, United States)
Date Acquired
August 16, 2013
Publication Date
December 24, 1992
Publication Information
Publication: Geophysical Research Letters
Volume: 19
Issue: 24
ISSN: 0094-8276
Subject Category
Environment Pollution
Accession Number
93A24389
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-15816
Distribution Limits
Public
Copyright
Other

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