An upper limit for the rate coefficient of the reaction of NH2 radicals with O2 using FTIR product analysis

G. S. Tyndall; J. J. Orlando; K. E. Nickerson; C. A. Cantrell; J. G. Calvert

doi:10.1029/91jd02044

An upper limit for the rate coefficient of the reaction of NH₂ radicals with O₂ using FTIR product analysis

G. S. Tyndall, J. J. Orlando, K. E. Nickerson, C. A. Cantrell, J. G. Calvert

Experimental Science Section

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25 Scopus citations

Abstract

Fourier transform infrared spectrometry has been used to study the products of the photooxidation of ammonia in the presence of oxygen at 296 K. The data have been used to derive an upper limit of 6 × 10^-21 cm³ molecule^-1 s^-1 for the reaction of NH₂ radicals with O₂ to produce NO_x at 296 K. This upper limit, which is 3 orders of magnitude lower than previous estimates based on the kinetics of NH₂ loss, rules out the importance of this reaction in the atmosphere and suggests that NH₂ will be oxidized by O₃ or NO₂. The effect on the NO_x and N₂O budgets depends critically on the products of the NH₂ + O₃ reaction. -from Authors

Original language	English
Pages (from-to)	20,761-20,768
Journal	Journal of Geophysical Research
Volume	96
Issue number	D11
DOIs	https://doi.org/10.1029/91jd02044
State	Published - 1991

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@article{0117e38085234dcb847861a40aeec035,

title = "An upper limit for the rate coefficient of the reaction of NH2 radicals with O2 using FTIR product analysis",

abstract = "Fourier transform infrared spectrometry has been used to study the products of the photooxidation of ammonia in the presence of oxygen at 296 K. The data have been used to derive an upper limit of 6 × 10-21 cm3 molecule-1 s-1 for the reaction of NH2 radicals with O2 to produce NOx at 296 K. This upper limit, which is 3 orders of magnitude lower than previous estimates based on the kinetics of NH2 loss, rules out the importance of this reaction in the atmosphere and suggests that NH2 will be oxidized by O3 or NO2. The effect on the NOx and N2O budgets depends critically on the products of the NH2 + O3 reaction. -from Authors",

author = "Tyndall, \{G. S.\} and Orlando, \{J. J.\} and Nickerson, \{K. E.\} and Cantrell, \{C. A.\} and Calvert, \{J. G.\}",

year = "1991",

doi = "10.1029/91jd02044",

language = "English",

volume = "96",

pages = "20,761--20,768",

journal = "Journal of Geophysical Research",

issn = "0148-0227",

publisher = "Wiley-Blackwell",

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TY - JOUR

T1 - An upper limit for the rate coefficient of the reaction of NH2 radicals with O2 using FTIR product analysis

AU - Tyndall, G. S.

AU - Orlando, J. J.

AU - Nickerson, K. E.

AU - Cantrell, C. A.

AU - Calvert, J. G.

PY - 1991

Y1 - 1991

N2 - Fourier transform infrared spectrometry has been used to study the products of the photooxidation of ammonia in the presence of oxygen at 296 K. The data have been used to derive an upper limit of 6 × 10-21 cm3 molecule-1 s-1 for the reaction of NH2 radicals with O2 to produce NOx at 296 K. This upper limit, which is 3 orders of magnitude lower than previous estimates based on the kinetics of NH2 loss, rules out the importance of this reaction in the atmosphere and suggests that NH2 will be oxidized by O3 or NO2. The effect on the NOx and N2O budgets depends critically on the products of the NH2 + O3 reaction. -from Authors

AB - Fourier transform infrared spectrometry has been used to study the products of the photooxidation of ammonia in the presence of oxygen at 296 K. The data have been used to derive an upper limit of 6 × 10-21 cm3 molecule-1 s-1 for the reaction of NH2 radicals with O2 to produce NOx at 296 K. This upper limit, which is 3 orders of magnitude lower than previous estimates based on the kinetics of NH2 loss, rules out the importance of this reaction in the atmosphere and suggests that NH2 will be oxidized by O3 or NO2. The effect on the NOx and N2O budgets depends critically on the products of the NH2 + O3 reaction. -from Authors

UR - https://www.scopus.com/pages/publications/0026302704

U2 - 10.1029/91jd02044

DO - 10.1029/91jd02044

M3 - Article

AN - SCOPUS:0026302704

SN - 0148-0227

VL - 96

SP - 20,761-20,768

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

IS - D11

ER -

An upper limit for the rate coefficient of the reaction of NH₂ radicals with O₂ using FTIR product analysis

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