Atmospheric Chemistry of alpha-Diketones: Kinetics of C-5 and C-6 Compounds with Cl Atoms and OH Radicals.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F17%3A00507141" target="_blank" >RIV/67985858:_____/17:00507141 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0298198" target="_blank" >http://hdl.handle.net/11104/0298198</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/kin.21060" target="_blank" >10.1002/kin.21060</a>
Alternative languages
Result language
angličtina
Original language name
Atmospheric Chemistry of alpha-Diketones: Kinetics of C-5 and C-6 Compounds with Cl Atoms and OH Radicals.
Original language description
Carbonyls play an important role in atmospheric chemistry due to their formation in the photooxidation of biogenic and anthropogenic volatile organic compounds and their high atmospheric reactivity. The Cl-initiated kinetics of two alpha-diketones (2,3-pentanedione (PTD) and 2,3-hexanedione (HEX)) have been determined as well as the OH + HEX rate constant using atmospheric simulation chamber experiments and the relative rate method. Up to three different reference compounds were used to assess robust results. The following rate constants (in cm(3) molecule(-1) s(-1)) have been obtained at 298 K: k(Cl + PTD) = (1.6 +/- 0.2) x 10(-11), k(Cl + HEX) = (8.8 +/- 0.4) x 10(-11), and k(OH + HEX) = (3.6 +/- 0.7) x 10(-12) with a global uncertainty of 30%. The present determinations of Cl-and OH-reaction rate constants for HEX constitute first measurements. Using the present measurements, a recently improved structure-activity relationship for Cl + ketone reactions has been updated by introducing an F(-COCO-) factor of 8.33 x 10(-4). Atmospheric lifetime calculations indicate that chlorine-initiated oxidation may be a significant alpha-diketone sink in the marine-boundary layer or in places where high Cl concentrations may be found.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Chemical Kinetics
ISSN
0538-8066
e-ISSN
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Volume of the periodical
49
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
112-118
UT code for WoS article
000393876500004
EID of the result in the Scopus database
2-s2.0-85006659993