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| Titel |
298 K rate coefficients for the reaction of OH with i - C₃H₇I, n - C₃H₇I and C₃H₈ |
| VerfasserIn |
S. A. Carl, J. N. Crowley |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 1, no. 1 ; Nr. 1, no. 1 (2001-11-22), S.1-7 |
| Datensatznummer |
250000061
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| Publikation (Nr.) |
 copernicus.org/acp-1-1-2001.pdf |
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| Zusammenfassung |
| The kinetics of
the title reactions were investigated using the laser photolysis - resonance
fluorescence method, employing the sequential two-photon dissociation of NO2
in the
presence of H2 as the OH source. The 298 K rate constant for OH
+ C3H8 was found to be (1.15 ± 0.1) × 10-12
cm3 s-1, in excellent agreement with the literature
recommendation, and with a separate determination using HNO3
photolysis at 248 nm as the OH source. The 298 K rate constants for OH + n
- C3H7I
and i -
C3H7I were measured for the first time and found to
be (1.47 ± 0.08) and (1.22 ± 0.06) × 10-12 cm3
s-1, respectively. The errors include an assessment of systematic
error due to concentration measurement, which, for the propyl-iodides was
minimised by on-line UV-absorption spectroscopy. These results show that
reaction with OH is an important sink for
n -
C3H7I and
i -
C3H7I, which has implications for the reactive iodine
budget of the marine boundary layer. |
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