The uptake of HNO3 on meteoric smoke analogues

The uptake of HNO3 on meteoric smoke analogues

The uptake of HNO3, H2O, NO2 and NO was studied on meteoric smoke particle analogues using a low-pressure Knudsen cell operating at 295K. The analogues used were olivine (MgFeSiO4) and a haematite/goethite (Fe2O3/FeO(OH)) mixture synthesised by the sol–gel process. For uptake on MgFeSiO4, the follow...

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Veröffentlicht in:Journal of atmospheric and solar-terrestrial physics 2015-05, Vol.127, p.150-160
Hauptverfasser: Frankland, Victoria L., James, Alexander D., Feng, Wuhu, Plane, John M.C.
Format: Artikel
Sprache:eng
Schlagworte:
Knudsen cell
Mathematical models
Meteoric smoke
Nitric acid
Nitrogen dioxide
Olivine
Polar vortex
Smoke
Sol gel process
Uptake coefficient
Uptakes
Vapour
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Zusammenfassung:The uptake of HNO3, H2O, NO2 and NO was studied on meteoric smoke particle analogues using a low-pressure Knudsen cell operating at 295K. The analogues used were olivine (MgFeSiO4) and a haematite/goethite (Fe2O3/FeO(OH)) mixture synthesised by the sol–gel process. For uptake on MgFeSiO4, the following uptake coefficients were obtained: γ(HNO3)=(1.8±0.3)×10−3, γ(H2O)=(4.0±1.3)×10−3, γ(NO2)=(5.7±0.2)×10−4 and γ(NO)
ISSN:1364-6826
1879-1824
DOI:10.1016/j.jastp.2015.01.010