| RAY, Debajyoti, Romana KURKOVÁ, Ivana HOVORKOVÁ a Petr KLÁN. Determination of the Specific Surface Area of Snow Using Ozonation of 1,1-Diphenylethylene. Environmental Science & Technology. USA: The American Chemical Society, 2011, roč. 45, č. 23, s. 10061-10067. ISSN 0013-936X. Dostupné z: https://dx.doi.org/10.1021/es202922k. |
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@article{965021,
author = {Ray, Debajyoti and Kurková, Romana and Hovorková, Ivana and Klán, Petr},
article_location = {USA},
article_number = {23},
doi = {http://dx.doi.org/10.1021/es202922k},
keywords = {Photochemistry; snow; ozonolysis},
language = {eng},
issn = {0013-936X},
journal = {Environmental Science & Technology},
title = {Determination of the Specific Surface Area of Snow Using Ozonation of 1,1-Diphenylethylene},
url = {http://pubs.acs.org/doi/abs/10.1021/es202922k},
volume = {45},
year = {2011}
}
TY - JOUR
ID - 965021
AU - Ray, Debajyoti - Kurková, Romana - Hovorková, Ivana - Klán, Petr
PY - 2011
TI - Determination of the Specific Surface Area of Snow Using Ozonation of 1,1-Diphenylethylene
JF - Environmental Science & Technology
VL - 45
IS - 23
SP - 10061-10067
EP - 10061-10067
PB - The American Chemical Society
SN - 0013936X
KW - Photochemistry
KW - snow
KW - ozonolysis
UR - http://pubs.acs.org/doi/abs/10.1021/es202922k
L2 - http://pubs.acs.org/doi/abs/10.1021/es202922k
N2 - We measured the kinetics of ozonation reaction of 1,1-diphenylethylene (DPE) in artificial snow, produced by shock freezing of DPE aqueous solutions sprayed into liquid nitrogen. It was demonstrated that most of the reactant molecules are in direct (productive) contact with gaseous ozone, thus the technique produces snow with organic molecules largely ejected to the surface of snow grains. The kinetic data were used to evaluate the snow specific surface area (70 cm2 g–1). This number is a measure of the availability of the molecules on the surface for chemical reaction with gaseous species. The results are consistent with the Langmuir–Hinshelwood type reaction mechanism. For typical atmospheric ozone concentrations in polar areas (20 ppbv), the estimated half-life of DPE, representing environmentally relevant compounds such as alkenes on the surface of snow grains is 5 days at sub-monolayer coverages and –15 oC.
ER -
RAY, Debajyoti, Romana KURKOVÁ, Ivana HOVORKOVÁ a Petr KLÁN. Determination of the Specific Surface Area of Snow Using Ozonation of 1,1-Diphenylethylene. \textit{Environmental Science \&{} Technology}. USA: The American Chemical Society, 2011, roč.~45, č.~23, s.~10061-10067. ISSN~0013-936X. Dostupné z: https://dx.doi.org/10.1021/es202922k.
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