搜索结果: 1-5 共查到“大气化学 surfaces”相关记录5条 . 查询时间(0.046 秒)
Kinetics and mechanisms of heterogeneous reaction of NO2 on CaCO3 surfaces under dry and wet conditions
heterogeneous reaction CaCO3 surfaces dry wet
2010/2/1
With increasing NO2 concentration in the troposphere, the importance of NO2 reaction with mineral dust in the atmosphere needs to be evaluated. Until now, little is known about the reaction of NO2 wit...
Uptake and reaction of HOBr on frozen and dry NaCl/NaBr surfaces between 253 and 233 K
HOBr frozen and dry NaCl/NaBr surfaces
2009/3/11
Variation of the pH of the NaCl / NaBr solution used to prepare the frozen surfaces was found to have no significant influence on the results. The observations are explained in terms of initial format...
A comprehensive evaluation of water uptake on atmospherically relevant mineral surfaces: DRIFT spectroscopy, thermogravimetric analysis and aerosol growth measurements
water uptake DRIFT spectroscopy thermogravimetric analysis aerosol growth measurements
2009/2/19
The hygroscopicity of mineral aerosol samples has been examined by three independent methods: diffuse reflectance infrared Fourier transform spectroscopy, thermogravimetric analysis and differential m...
Distinction between clouds and ice/snow covered surfaces in the identification of cloud-free observations using SCIAMACHY PMDs
clouds ice/snow covered surfaces cloud-free SCIAMACHY PMDs
2009/2/18
SCIAMACHY on ENVISAT allows measurement of different trace gases including those most abundant in the troposphere (e.g. CO2, NO2, CH4, BrO, SO2). However, clouds in the observed scenes can severely hi...
Heterogeneous conversion of NO2 and NO on HNO3 treated soot surfaces: atmospheric implications
NO2 NO HNO3 soot surfaces atmospheric implications
2009/1/23
For the treatment of soot by pure HNO3 only reversible uptake with a surface coverage of ~1-2x1014 HNO3 cm-2 was observed for HNO3 mixing ratios in the range 250-800ppbv. Only for higher HNO3 mixing r...