Atmospheric loss of nitrous oxide (NO) is not influenced by its potential reactions with OH and NO radicals
The rate coefficient for the possible reaction of OH radical with N 2 O was determined to be k 1 < 1 × 10 −17 cm 3 molecule −1 s −1 between 253 and 372 K using pulsed laser photolysis to generate OH radicals and pulsed laser induced fluorescence to detect them. The rate coefficient for the reacti...
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Published in | Physical chemistry chemical physics : PCCP Vol. 21; no. 44; pp. 24592 - 246 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Published |
13.11.2019
|
Online Access | Get full text |
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Abstract | The rate coefficient for the possible reaction of OH radical with N
2
O was determined to be
k
1
< 1 × 10
−17
cm
3
molecule
−1
s
−1
between 253 and 372 K using pulsed laser photolysis to generate OH radicals and pulsed laser induced fluorescence to detect them. The rate coefficient for the reaction of NO
3
radical with N
2
O was measured to be
k
2
< 5 × 10
−20
cm
3
molecule
−1
s
−1
at 298 K using a direct method that involves a large reaction chamber equipped with cavity ring down spectroscopic detection of NO
3
and N
2
O
5
. Various tests were carried out ensure the accuracy of our measurements. Based on our measured upper limits, we suggest that these two reactions alter the atmospheric lifetime of N
2
O of ∼120 years by less than 4%.
The rate coefficient for the possible reaction of OH and NO
3
radical with N
2
O are shown to be, respectively, <1 × 10
−17
and <5 × 10
−20
cm
3
molecule
−1
s
−1
. They are too low to contribute significantly to the atmospheric removal of N
2
O. |
---|---|
AbstractList | The rate coefficient for the possible reaction of OH radical with N
2
O was determined to be
k
1
< 1 × 10
−17
cm
3
molecule
−1
s
−1
between 253 and 372 K using pulsed laser photolysis to generate OH radicals and pulsed laser induced fluorescence to detect them. The rate coefficient for the reaction of NO
3
radical with N
2
O was measured to be
k
2
< 5 × 10
−20
cm
3
molecule
−1
s
−1
at 298 K using a direct method that involves a large reaction chamber equipped with cavity ring down spectroscopic detection of NO
3
and N
2
O
5
. Various tests were carried out ensure the accuracy of our measurements. Based on our measured upper limits, we suggest that these two reactions alter the atmospheric lifetime of N
2
O of ∼120 years by less than 4%.
The rate coefficient for the possible reaction of OH and NO
3
radical with N
2
O are shown to be, respectively, <1 × 10
−17
and <5 × 10
−20
cm
3
molecule
−1
s
−1
. They are too low to contribute significantly to the atmospheric removal of N
2
O. |
Author | Ravishankara, A. R Idir, Mahmoud Romanias, Manolis N Zhou, Li Zogka, Antonia Mellouki, Abdelwahid Daële, Véronique Ren, Yangang Pele, Anne-Laure Brown, Steven S |
AuthorAffiliation | Univ. Lille Earth System Research Laboratory Colorado State University National Oceanic and Atmospheric Administration Aérothermique Department of Chemistry CNRS Chemical Sciences Division IMT Lille Douai Institut de Combustion Réactivité et Environnement/OSUC Departments of Chemistry and Atmospheric Science Le Studium Loire Valley Institute for Advanced Studies University of Colorado |
AuthorAffiliation_xml | – name: Univ. Lille – name: IMT Lille Douai – name: Department of Chemistry – name: Réactivité et Environnement/OSUC – name: CNRS – name: Le Studium Loire Valley Institute for Advanced Studies – name: Institut de Combustion – name: University of Colorado – name: Departments of Chemistry and Atmospheric Science – name: Aérothermique – name: Colorado State University – name: Chemical Sciences Division – name: National Oceanic and Atmospheric Administration – name: Earth System Research Laboratory |
Author_xml | – sequence: 1 givenname: A. R surname: Ravishankara fullname: Ravishankara, A. R – sequence: 2 givenname: Anne-Laure surname: Pele fullname: Pele, Anne-Laure – sequence: 3 givenname: Li surname: Zhou fullname: Zhou, Li – sequence: 4 givenname: Yangang surname: Ren fullname: Ren, Yangang – sequence: 5 givenname: Antonia surname: Zogka fullname: Zogka, Antonia – sequence: 6 givenname: Véronique surname: Daële fullname: Daële, Véronique – sequence: 7 givenname: Mahmoud surname: Idir fullname: Idir, Mahmoud – sequence: 8 givenname: Steven S surname: Brown fullname: Brown, Steven S – sequence: 9 givenname: Manolis N surname: Romanias fullname: Romanias, Manolis N – sequence: 10 givenname: Abdelwahid surname: Mellouki fullname: Mellouki, Abdelwahid |
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Snippet | The rate coefficient for the possible reaction of OH radical with N
2
O was determined to be
k
1
< 1 × 10
−17
cm
3
molecule
−1
s
−1
between 253 and 372 K using... |
SourceID | rsc |
SourceType | Publisher |
StartPage | 24592 |
Title | Atmospheric loss of nitrous oxide (NO) is not influenced by its potential reactions with OH and NO radicals |
Volume | 21 |
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