Oligomer Content of α-Pinene Secondary Organic Aerosol
نویسندگان
چکیده
منابع مشابه
Direct photolysis of α-pinene ozonolysis secondary organic aerosol: effect on particle mass and peroxide content.
Primary and secondary organic aerosols (POA and SOA) contain a complex mixture of multifunctional chemicals, many of which are photolabile. Much of the previous work that aimed to understand the chemical evolution (aging) of POA and SOA has focused on the reactive uptake of gas-phase oxidants by particles. By stripping volatile compounds and ozone from α-pinene ozonolysis SOA with three 1-m-lon...
متن کاملIntegrating phase and composition of secondary organic aerosol from the ozonolysis of α-pinene.
Airborne particles are important for public health, visibility, and climate. Predicting their concentrations, effects, and responses to control strategies requires accurate models of their formation and growth in air. This is challenging, as a large fraction is formed by complex reactions of volatile organic compounds, generating secondary organic aerosol (SOA), which grows to sizes important f...
متن کاملOzonolysis of α-pinene: parameterization of secondary organic aerosol mass fraction
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 (<5μg m−3). A wide range of smog chamber results obtained at various conditions (low/high NOx, presence/absence of UV radiation, dry/humid conditions, and temperatures ranging from 15–40C) collected by various research teams during the last d...
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: Aerosol Science and Technology
سال: 2011
ISSN: 0278-6826,1521-7388
DOI: 10.1080/02786826.2010.517580