搜索结果: 1-12 共查到“大气物理学 Kinetics”相关记录12条 . 查询时间(0.159 秒)
Iron dissolution kinetics of mineral dust at low pH during simulated atmospheric processing
mineral dust low pH simulated atmospheric processing
font style='font-size:12px;'>
2011/2/25
We investigated the iron (Fe) dissolution kinetics of African (Tibesti) and Asian (Beijing) dust samples at acidic pH with the aim of reproducing the low pH conditions in atmospheric aerosols. The Bei...
Heterogeneous ozonation kinetics of 4-phenoxyphenol in the presence of photosensitizer
Heterogeneous ozonation kinetics 4-phenoxyphenol photosensitizer
font style='font-size:12px;'>
2010/2/21
At the mixing ratio of 60 ppb which corresponds to strongly polluted ozone areas, the first order of decay of 4-phenoxyphenol is k1=9.95×10−6 s−1. At a very high ozone mixing ratio of 6 pp...
Slower CCN growth kinetics of anthropogenic aerosol compared to biogenic aerosol observed at a rural site
CCN growth kinetics anthropogenic aerosol biogenic aerosol
font style='font-size:12px;'>
2010/1/18
Growth rates of water droplets were measured with a static diffusion cloud condensation chamber in May–June 2007 at a rural field site in Southern Ontario, Canada, 70 km north of Toronto. The observat...
Cloud condensation nuclei measurements in the marine boundary layer of the Eastern Mediterranean: CCN closure and droplet growth kinetics
marine boundary layer Eastern Mediterranean CCN closure droplet growth kinetics
font style='font-size:12px;'>
2009/9/27
Measurements of cloud condensation nuclei (CCN) concentrations (cm−3) between 0.2 and 1.0% supersaturation, aerosol size distribution and chemical composition were performed at a remote marine s...
Relating CCN activity, volatility, and droplet growth kinetics of β-caryophyllene secondary organic aerosol
Relating CCN activity kinetics β-caryophyllene secondary organic aerosol
font style='font-size:12px;'>
2009/3/13
This study investigates the droplet formation characteristics of secondary organic aerosol (SOA) formed during the ozonolysis of sesquiterpene β-caryophyllene (with and without hydroxyl radicals prese...
Kinetics of the gas-phase reactions of OH radicals with alkanes and cycloalkanes
Kinetics gas-phase reactions OH radicals alkanes cycloalkanes
font style='font-size:12px;'>
2009/3/11
The available database concerning rate constants for gas-phase reactions of the hydroxyl (OH) radical with alkanes through early 2003 is presented over the entire temperature range for which measureme...
Kinetics and mechanism of the uptake of N2O5 on mineral dust at 298 K
Kinetics mechanism N2O5 mineral dust
font style='font-size:12px;'>
2009/2/19
The heterogeneous reaction of N2O5 with mineral (Saharan) dust has been studied at T=298 K using a combination of Knudsen and DRIFTS cells for kinetic and product investigations, respectively. The ini...
Kinetics and mechanism of heterogeneous oxidation of sulfur dioxide by ozone on surface of calcium carbonate
Kinetics and mechanism heterogeneous oxidation sulfur dioxide calcium carbonate
font style='font-size:12px;'>
2009/1/12
Sulfate particles play a key role in the air quality and the global climate, but the heterogeneous formation mechanism of sulfates on surfaces of atmospheric particles is not well established. Carbona...
Heterogeneous oxidation of saturated organic aerosols by hydroxyl radicals: uptake kinetics, condensed-phase products, and particle size change
Heterogeneous oxidation saturated organic aerosols hydroxyl radicals uptake kinetics
font style='font-size:12px;'>
2008/12/17
The kinetics and reaction mechanism for the heterogeneous oxidation of saturated organic aerosols by gas-phase OH radicals were investigated under NOx-free conditions. The reaction of 150 nm diameter ...
Understanding the kinetics of the ClO dimer cycle
kinetics ClO dimer cycle
font style='font-size:12px;'>
2008/12/12
Among the major factors controlling ozone loss in the polar vortices in winter/spring is the kinetics of the ClO dimer catalytic cycle. Here, we propose a strategy to test and improve our understandin...
The oleic acid-ozone heterogeneous reaction system: products, kinetics, secondary chemistry, and atmospheric implications of a model system – a review
oleic acid-ozone kinetics secondary chemistry
font style='font-size:12px;'>
2008/12/3
The heterogeneous processing of organic aerosols by trace oxidants has many implications to atmospheric chemistry and climate regulation. This review covers a model heterogeneous reaction system (HRS)...
CCN activity and droplet growth kinetics of fresh and aged monoterpene secondary organic aerosol
CCN droplet growth kinetics aged monoterpene organic aerosol
font style='font-size:12px;'>
2008/11/13
The ability of secondary organic aerosol (SOA) produced from the ozonolysis of α-pinene and monoterpene mixtures (α-pinene, β-pinene, limonene and 3-carene) to become cloud droplets was investigated....