About: Determination of the Specific Surface Area of Snow Using Ozonation of 1,1-Diphenylethylene

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://pubs.acs.org/doi/abs/10.1021/es202922k
Description	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. 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. (en)
Title	Determination of the Specific Surface Area of Snow Using Ozonation of 1,1-Diphenylethylene Determination of the Specific Surface Area of Snow Using Ozonation of 1,1-Diphenylethylene (en)
skos:prefLabel	Determination of the Specific Surface Area of Snow Using Ozonation of 1,1-Diphenylethylene Determination of the Specific Surface Area of Snow Using Ozonation of 1,1-Diphenylethylene (en)
skos:notation	RIV/00216224:14310/11:00050349!RIV12-GA0-14310___
http://linked.open...avai/predkladatel	Přírodovědecká fakulta
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(ED0001/01/01), P(GAP503/10/0947), Z(MSM0021622412)
http://linked.open...iv/cisloPeriodika	23
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Klán, Petr Hovorková, Ivana Kurková, Romana Ray, Debajyoti
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	193912
http://linked.open...ai/riv/idVysledku	RIV/00216224:14310/11:00050349
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Photochemistry; snow; ozonolysis (en)
http://linked.open.../riv/klicoveSlovo	Photochemistry ozonolysis snow
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[1A3A0AD4E735]
http://linked.open...i/riv/nazevZdroje	Environmental Science & Technology
http://linked.open...in/vavai/riv/obor	CC
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	CETOCOEN Implications of photochemical activity of organic pollutants in polar regions
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	45
http://linked.open...iv/tvurceVysledku	Klán, Petr Hovorková, Ivana Kurková, Romana Ray, Debajyoti
http://linked.open...ain/vavai/riv/wos	000297382700035
http://linked.open...n/vavai/riv/zamer	Interactions among the chemicals, environment and biological systems and their consequences on the global, regional and local scales (INCHEMBIOL)
issn	0013-936X
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1021/es202922k
http://localhost/t...ganizacniJednotka	14310
is http://linked.open...avai/riv/vysledek of	Determination of the Specific Surface Area of Snow Using Ozonation of 1,1-Diphenylethylene Determination of the Specific Surface Area of Snow Using Ozonation of 1,1-Diphenylethylene

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