搜索结果: 1-15 共查到“photooxidation”相关记录16条 . 查询时间(0.051 秒)
Cloud droplet activation of mixed organic-sulfate particles produced by the photooxidation of isoprene
Cloud droplet mixed organic-sulfate particles the photooxidation of isoprene
2010/8/12
The cloud condensation nuclei (CCN) properties of ammonium sulfate particles mixed with organic material condensed during the hydroxyl-radical-initiated photooxidation of isoprene (C5H8) were investig...
Temperature effect on physical and chemical properties of secondary organic aerosol from m-xylene photooxidation
Temperature effect physical and chemical properties secondary organic aerosol m-xylene photooxidation
2010/8/12
The chemical and physical differences of secondary organic aerosol (SOA) formed at select isothermal temperatures (278 K, 300 K, and 313 K) are explored with respect to density, particle volatility, p...
Molecular characterization of urban organic aerosol in tropical India: contributions of primary emissions and secondary photooxidation
Molecular characterization urban organic aerosol tropical India primary emissions secondary photooxidation
2010/8/12
Organic molecular composition of PM10 samples, collected at Chennai in tropical India, was studied using capillary gas chromatography/mass spectrometry. Fourteen organic compound classes were detected...
Tropospheric photooxidation of CF3CH2CHO and CF3(CH2)2CHO initiated by Cl atoms and OH radicals
Tropospheric photooxidation CF3CH2CHO Cl atoms OH radicals
2010/2/21
The absolute rate coefficients for the tropospheric reactions of chlorine (Cl) atoms and hydroxyl (OH) radicals with CF3CH2CHO and CF3(CH2)2CHO were measured as a function of temperature (263–371 K) a...
Heterogeneous Photooxidation of Phenol by Catalytic Membranes
photo-oxidation decatungstate catalytic membrane
2009/11/16
In this work the heterogenization in polymeric membranes of decatungstate, a photocatalyst for oxidation reactions, was reported. Solid state characterization techniques confirmed that the catalyst st...
In-cloud processes of methacrolein under simulated conditions – Part 1: Aqueous phase photooxidation
In-cloud processes methacrolein Aqueous phase photooxidation
2009/8/7
The photooxidation of methacrolein was studied in the aqueous phase under simulated cloud droplet conditions. The obtained rate constant of OH-oxidation of methacrolein at 6°C in unbuffered solutions ...
Secondary organic aerosol formation from photooxidation of naphthalene and alkylnaphthalenes: implications for oxidation of intermediate volatility organic compounds（IVOCs）
Secondary organic aerosol formation photooxidation naphthalene oxidation IVOCs
2009/5/15
Current atmospheric models do not include secondary organic aerosol (SOA) production from gas-phase reactions of polycyclic aromatic hydrocarbons (PAHs). Recent studies have shown that primary emissio...
Isoprene photooxidation: new insights into the production of acids and organic nitrates
Isoprene photooxidation new insights acids and organic nitrates
2009/3/13
We describe a nearly explicit chemical mechanism for isoprene photooxidation guided by chamber studies that include time-resolved observation of an extensive suite of volatile compounds. We provide ne...
Gas phase precursors to anthropogenic secondary organic aerosol: detailed observations of 1,3,5-trimethylbenzene photooxidation
Gas phase precursors anthropogenic secondary organic aerosol 1,3,5-trimethylbenzene photooxidation
2009/3/12
A series of photooxidation experiments were conducted in an atmospheric simulation chamber in order to investigate the oxidation mechanism and secondary organic aerosol (SOA) formation potential of th...
Modelling of the photooxidation of toluene: conceptual ideas for validating detailed mechanisms
photooxidation of toluene conceptual ideas validating detailed mechanisms
2009/3/10
Toluene photooxidation is chosen as an example to examine how simulations of smog-chamber experiments can be used to unravel shortcomings in detailed mechanisms and to provide information on complex...
A mass spectrometric study of secondary organic aerosols formed from the photooxidation of anthropogenic and biogenic precursors in a reaction chamber
mass spectrometric study secondary organic aerosols photooxidation of anthropogenic biogenic precursors reaction chamber
2009/1/20
An Aerodyne Aerosol Mass Spectrometer (AMS) has been utilised to provide on-line measurements of the mass spectral signatures and mass size distributions of the oxidation products resulting from irrad...
Potential Photooxidation Pathways of Dicarboxylic Acids in Atmospheric Droplets
Dicarboxylic acid reaction pathway intermediates photooxidation
2009/1/5
Low molecular weight (LMW) dicarboxylic acids (DCAs) have received increasing attention because of their hygroscopic properties and capability of acting as cloud condensation nuclei (CCN). Based on th...
Effect of NOx level on secondary organic aerosol（SOA）formation from the photooxidation of terpenes
NOx level secondary organic aerosol SOA photooxidation
2008/12/22
Secondary organic aerosol (SOA) formation from the photooxidation of one monoterpene (α-pinene) and two sesquiterpenes (longifolene and aromadendrene) is investigated in the Caltech environmental cham...
Gas/particle partitioning of carbonyls in the photooxidation of isoprene and 1,3,5-trimethylbenzene
Gas particle carbonyls photooxidation isoprene 1,3,5-trimethylbenzene
2008/11/11
A new denuder-filter sampling technique has been used to investigate the gas/particle partitioning behaviour of the carbonyl products from the photooxidation of isoprene and 1,3,5-trimethylbenzene.
PHOTOOXIDATION OF CRUDE PETROLEUM MALTENIC FRACTION IN NATURAL SIMULATED CONDITIONS AND STRUCTURAL ELUCIDATION OF PHOTOPRODUCTS
Photooxidation oil spill infrared spectrometry mass spectroscopy
2010/4/2
Photooxidation is an important process in the degradation of petroleum spilled in the marine environment. Most crude oils spilled at sea spread rapidly to form slicks with greatly increased surface ar...