Interpretation of Secondary Organic Aerosol Formation from Diesel Exhaust Photooxidation in an Environmental Chamber
作者: Shunsuke NakaoManish ShrivastavaAnh NguyenHeejung JungDavid Cocker
作者单位: 1Department of Chemical and Environmental Engineering , University of California , Riverside , California , USA
2College of Engineering, Center for Environmental Research and Technology (CE-CERT) , University of California , Riverside , California , USA
3Department of Mechanical Engineering , University of California , Riverside , California , USA
4Pacific Northwest National Laboratory , Richland , Washington , USA
刊名: Aerosol Science and Technology, 2011, Vol.45 (8), pp.964-972
来源数据库: Taylor & Francis Journal
DOI: 10.1080/02786826.2011.573510
原始语种摘要: Secondary organic aerosol (SOA) formation from diesel exhaust was investigated using an environmental chamber. Particle volume measurement based solely on mobility diameter underestimated the SOA formation from diesel exhaust due to the external void space of agglomerate particles. Therefore, particle mass concentration and fractal-like dimension was determined from the particle effective density as a function of particle mass using an aerosol particle mass analyzer and scanning mobility particle sizer (APM–SMPS). Continuous aging of aerosol measured by an increase of atomic ratio (O/C) underscored the importance of multigenerational oxidation of low-volatile organic vapors emitted from diesel engine as a possible significant source of ambient oxygenated SOA. Higher particle effective...
全文获取路径: Taylor & Francis  (合作)
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影响因子:2.78 (2012)

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