搜索结果: 1-15 共查到“大气科学 ozonolysis”相关记录22条 . 查询时间(0.095 秒)
Second-generation products contribute substantially to the particle-phase organic material produced by β-caryophyllene ozonolysis
the particle-phase organic material β-caryophyllene ozonolysis
2011/1/19
The production of secondary organic aerosol (SOA) by the dark ozonolysis of gas-phase β-caryophyllene was studied. The experiments were conducted in a continuous-flow environmental chamber for organic...
Terpenylic acid and related compounds: precursors for dimers in secondary organic aerosol from the ozonolysis of α- and β-pinene
Terpenylic acid dimers secondary organic aerosol the ozonolysis of α- and β-pinene
2010/10/11
In the present study, we have characterized the structure of a higher-molecular weight (MW) 358 α- and β-pinene dimeric secondary organic aerosol (SOA) product that received ample attention in previou...
Influence of relative humidity and temperature on the production of pinonaldehyde and OH radicals from the ozonolysis of α-pinene
relative humidity and temperature pinonaldehyde and OH radicals α-pinene
2010/8/16
The ozonolysis of α-pinene has been investigated under dry and humid conditions in the temperature range of 243–303 K. The results provided new insight into the role of water and temperature in the de...
Distribution of gaseous and particulate organic composition during dark α-pinene ozonolysis
gaseous and particulate organic composition dark α-pinene ozonolysis
2010/8/12
Secondary Organic Aerosol (SOA) affects atmospheric composition, air quality and radiative transfer, however major difficulties are encountered in the development of reliable models for SOA formation....
Water-soluble SOA from Alkene ozonolysis: composition and droplet activation kinetics inferences from analysis of CCN activity
Water-soluble SOA droplet activation kinetics inferences CCN activity
2010/2/21
Cloud formation characteristics of the water-soluble organic fraction (WSOC) of secondary organic aerosol (SOA) formed from the ozonolysis of alkene hydrocarbons (terpinolene, 1-methlycycloheptene and...
Measurements of OH and HO2 yields from the gas phase ozonolysis of isoprene
OH and HO2 yields gas phase ozonolysis isoprene
2010/2/21
The reactions of ozone with alkenes are an important source of hydroxyl (OH) radicals; however, quantification of their importance is hindered by uncertainties in the absolute OH yield. Hydroxyl radic...
Temperature and humidity dependence of secondary organic aerosol yield from the ozonolysis of β-pinene
secondary organic aerosol yield ozonolysis β-pinene
2009/6/16
The temperature dependence of secondary organic aerosol (SOA) formation from ozonolysis of β-pinene was studied in a flow reactor at 263 K–303 K and 1007 hPa under dry and humid conditions (0% and 26%...
Validation of an experimental setup to study atmospheric heterogeneous ozonolysis of semi-volatile organic compounds
atmospheric heterogeneous ozonolysis semi-volatile organic compounds
2009/3/31
There is currently a need for reliable experimental procedures to follow the heterogeneous processing simulating the atmospheric conditions. This work offers an alternative experimental device to stud...
Temperature dependence of yields of secondary organic aerosols from the ozonolysis of α-pinene and limonene
secondary organic aerosols α-pinene limonene
2009/3/13
Secondary organic aerosol (SOA) formation has been investigated as a function of temperature and humidity for the ozone-initiated reaction of the two monoterpenes α-pinene (243–313 K) and limonene (25...
Modelling the formation and composition of secondary organic aerosol from α- and β-pinene ozonolysis using MCM v3
secondary organic aerosol α- and β-pinene ozonolysis MCM v3
2009/3/5
The formation and detailed composition of secondary organic aerosol (SOA) from the gas phase ozonolysis of α- and β-pinene has been simulated using the Master Chemical Mechanism version 3 (MCM v3), co...
Nanoparticle formation by ozonolysis of inducible plant volatiles
Nanoparticle formation ozonolysis inducible plant volatiles
2009/2/11
We present the first laboratory experiments of aerosol formation from oxidation of volatile organic species emitted by living plants, a process which for half a century has been known to take place in...
Formation of secondary organic aerosol and oligomers from the ozonolysis of enol ethers
secondary organic aerosol oligomers ozonolysis enol ethers
2009/1/16
Formation of secondary organic aerosol has been observed in the gas phase ozonolysis of a series of enol ethers, among them several alkyl vinyl ethers (AVE, ROCH=CH2), such as ethyl, propyl, n-butyl, ...
Investigating the composition of organic aerosol resulting from cyclohexene ozonolysis: low molecular weight and heterogeneous reaction products
organic aerosol cyclohexene ozonolysis low molecular weight heterogeneous reaction products
2009/1/16
The composition of organic aerosol formed from the gas phase ozonolysis of cyclohexene has been investigated in a smog chamber experiment. Comprehensive gas chromatography with time of flight mass spe...
The relative importance of competing pathways for the formation of high-molecular-weight peroxides in the ozonolysis of organic aerosol particles
competing pathways high-molecular-weight peroxides ozonolysis organic aerosol particles
2009/1/16
High-molecular-weight (HMW) organic compounds are an important component of atmospheric particles, although their origins, possibly including in situ formation pathways, remain incompletely understood...
Ozonolysis of α-pinene: parameterization of secondary organic aerosol mass fraction
α-pinene secondary organic aerosol mass fraction
2008/12/15
Existing parameterizations tend to underpredict the α-pinene aerosol mass fraction (AMF) or yield by a factor of 2–5 at low organic aerosol concentrations (<5 µg m−3). A wide range of smog...