Photochemical aerosol formation from α-pinene- and β-pinene
نویسندگان
چکیده
منابع مشابه
Photochemical aerosol formation from pinene and pinene
Aerosol formation from ot-pinene and •-pinene was studied in a series of outdoor smog chamber experiments. Since a previous tudy focused on •-pinene (Pandis et al., 1991), more attention was given here to ot-pinene. The initial hydrocarbon and NO x concentrations ranged from 37 to 582 ppb and 31 to 380 ppb, respectively. The aerosol carbon yield, the fraction of the carbon initially present tha...
متن کاملBiological activities of α-pinene and β-pinene enantiomers.
The antimicrobial activities of the isomers and enantiomers of pinene were evaluated against bacterial and fungal cells. The agar diffusion test showed that only the positive enantiomers of the α- and β-isomers of pinene were active. The minimal inhibitory concentration (MIC) and minimal microbicidal concentration (MMC) of these monoterpenes were also determined, confirming that the positive en...
متن کاملModelling the formation and composition of secondary organic aerosol from α- and β-pinene ozonolysis using MCM v3
The formation and detailed composition of secondary organic aerosol (SOA) from the gas phase ozonolysis of αand β-pinene has been simulated using the Master Chemical Mechanism version 3 (MCM v3), coupled with a representation of gas-to-aerosol transfer of semivolatile and involatile oxygenated products. A kinetics representation, based on equilibrium absorptive partitioning of ca. 200 semivolat...
متن کاملAerosol Formation from the Reaction of Α-pinene and Ozone Using
A kinetic mechanism was used to describe the gas-phase reactions of α-pinene with ozone. This reaction scheme produces low vapor pressure reaction products that distribute between gas and particle phases. Partitioning was treated as an equilibrium between the rate of particle uptake and rate of particle loss of semivolatile terpene reaction products. Given estimated liquid vapor pressures and a...
متن کاملFormation and evolution of molecular products in α-pinene secondary organic aerosol.
Much of our understanding of atmospheric secondary organic aerosol (SOA) formation from volatile organic compounds derives from laboratory chamber measurements, including mass yield and elemental composition. These measurements alone are insufficient to identify the chemical mechanisms of SOA production. We present here a comprehensive dataset on the molecular identity, abundance, and kinetics ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 1992
ISSN: 0148-0227
DOI: 10.1029/92jd02156