[PDF] Top 20 Phase, composition and growth mechanism for secondary organic aerosol from the ozonolysis of α-cedrene
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Phase, composition and growth mechanism for secondary organic aerosol from the ozonolysis of α-cedrene
... in the flow reactor under dry conditions was measured in real time using a Xevo TQS triple quadrupole mass spectrometer (Waters) equipped with a com- mercial DART ion source (IonSense, DART SVP with Vapur ® ... See full document
54
Aqueous phase processing of secondary organic aerosols
... tion aerosol mass spectrometer (TD-API-AMS). Comparing the smog chamber SOA composition and non processed nebulized aqueous extracts with this technique re- vealed that sampling, extraction ... See full document
44
Relating hygroscopicity and optical properties to chemical composition and structure of secondary organic aerosol particles generated from the ozonolysis of α-pinene
... than the sensitivity of the ...than the bulk O : C, can control the water uptake of ...hygroscopicity of particles and their de- gree of oxidation for SOA ... See full document
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Mechanism reduction for the formation of secondary organic aerosol for integration into a 3-dimensional regional Air Quality Model: <i>α</i>-pinene oxidation system
... However, the number of species and reactions from a detailed gas phase chemical mechanism for SOA formation are much larger than those commonly used within 3- dimensional ... See full document
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The effect of photochemical ageing and initial precursor concentration on the composition and hygroscopic properties of β-caryophyllene secondary organic aerosol
... obtained from the filters were directly injected into the ion trap mass spectrometer without separation using a syringe pump at 240 µlpm, to obtain a molar mass distribu- ...SOA of different ... See full document
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Real refractive indices and volatility of secondary organic aerosol generated from photooxidation and ozonolysis of limonene, α-pinene and toluene
... Comparisons of refractive indices of thermodenuded and undenuded SOA studied in previous studies (Kim et ...Ranges of refractive index for each SOA result from changing chemical ... See full document
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CCN activity and droplet growth kinetics of fresh and aged monoterpene secondary organic aerosol
... created from oxygen gas via corona discharge using an ozone generator (Azcozon) and the concentration was measured with an ozone monitor (Dasibi, ...in the reactor ranged from 300 ppb ... See full document
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Secondary Organic Aerosol (SOA) formation from hydroxyl radical oxidation and ozonolysis of monoterpenes
... study of Ehn et al. (2014) showing the formation of first generation products as the rate-limiting ...on the hydrocarbon consumed for α-pinene and β-pinene, and ... See full document
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Modeling of secondary organic aerosol yields from laboratory chamber data
... within the experimental uncertainty. When all α-pinene is consumed and the SOA growth has leveled out (∼58 µg m − 3 ), O/C and H/C ratios and fragment mass spectrum (not ... See full document
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A qualitative comparison of secondary organic aerosol yields and composition from ozonolysis of monoterpenes at varying concentrations of NO<sub>2</sub>
... variety of factors may contribute to the absolute numer- ical values of these yields differing from yields reported in the ...2014), and the chamber size, mixing, ... See full document
15
Ozonolysis of α-pinene: parameterization of secondary organic aerosol mass fraction
... atmosphere and are used in chemical transport models. The Odum/Griffin et ...(1999a) and Carnegie Mel- lon University/Sonoma Technology ...mixture of primary and secondary ... See full document
11
Modelling the formation and composition of secondary organic aerosol from α- and β-pinene ozonolysis using MCM v3
... results of chamber investigations of SOA formation from α- and β-pinene ozonolysis have commonly been inter- preted or modelled in terms of absorptive gas-aerosol ... See full document
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Observations and implications of liquid–liquid phase separation at high relative humidities in secondary organic material produced by <i>α</i>-pinene ozonolysis without inorganic salts
... consisting of secondary organic material (SOM) are abundant in the ...predict the role of these particles in climate, visibility and atmospheric chem- istry, information ... See full document
11
High formation of secondary organic aerosol from the photo-oxidation of toluene
... Condensation of organic vapors to chamber walls To determine P wall , we assume that condensable vapors are not lost to the clean Teflon walls, but instead condense onto particles that have been ... See full document
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Development of a secondary organic aerosol formation mechanism: comparison with smog chamber experiments and atmospheric measurements
... influence of emissions from New York and Boston, but little evidence of impact from power plant emissions (De Gouw et ...2005). The measured organic aerosols showed a ... See full document
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Aqueous-phase mechanism for secondary organic aerosol formation from isoprene: application to the Southeast United States and co-benefit of SO<sub>2</sub> emission controls
... data from individual SEAC 4 RS flight days (8 August–10 September), av- eraged on the GEOS-Chem ...days and coincident with the flight ...for the corresponding locations and ... See full document
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J. Braz. Chem. Soc. vol.16 número5
... pieces and its organic content extracted in a flask by refluxing dichloromethane for 24 ...h. The extract was filtrated and the solvent concentrated to volumes of approximately 4 ... See full document
13
Analysis of the hygroscopic and volatile properties of ammonium sulphate seeded and un-seeded SOA particles
... teractions. The distinction between these three effects is important because organic films may not necessarily affect the water absorption of atmospheric particles at sub- saturation because ... See full document
31
Primary and secondary organic aerosol origin by combined gas-particle phase source apportionment
... spectrometry. The time resolution of the deployed AMS was 10 min; details regarding the sampling protocol, AMS data analysis, applied corrections (collection efficiency, relative ionization ... See full document
16
High formation of secondary organic aerosol from the photo-oxidation of toluene
... t<0 the aerosol is entirely inorganic seed and its evolu- tion is entirely due to wall ...losses. The modeled inorganic suspended aerosol mass (black dotted line) calculated ... See full document
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