Chemistry of organic aerosol formation in urban atmospheres. Final report
Aerosol formation from the photooxidation of A-pinene/NOx and B-pinene/NOx mixtures has been investigated in a series of outdoor smog chamber experiments. Both hydrocarbons are potent aerosol formers and in areas containing significant vegetation, terpenes are estimated to be a significant contributor to secondary organic aerosol formation. To model organic aerosol formation, estimates of the vapor pressures of the condensable species are needed. To measure the vapor pressures of the low volatility species characteristic of organic aerosols the Tandem Differential Mobility Analyzer (TDMA) method introduced by Liu and McMurray has been further developed for this task. Initial experiments with compounds of known vapor pressure confirm the usefulness of the method.
- Research Organization:
- California Inst. of Tech., Pasadena, CA (United States). Dept. of Chemical Engineering
- OSTI ID:
- 6917969
- Report Number(s):
- PB-95-104147/XAB
- Country of Publication:
- United States
- Language:
- English
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