Formation of photochemical aerosol from hydrocarbons. Atmospheric analysis

O’Brien, Robert; Crabtree, James H.; Holmes, John R.; Hoggan, Margaret C.; Bockian, Albert H.

doi:10.1021/es60104a004

Cited by 54 publications

(21 citation statements)

References 5 publications

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“…O'Brien et al (34) have reported that mono-and dicarboxylic acids make up an appreciable portion (22% and 10%, respectively) of the organic content of particulate material found under photochemical smog conditions in the Los Angeles area. Schuetzle et al (35) have found high concentrations of organic alcohols and difunctional organic compounds in SOA.…”

Section: Resultsmentioning

confidence: 99%

Gas/Particle Partitioning of Semivolatile Organic Compounds To Model Inorganic, Organic, and Ambient Smog Aerosols

Liang¹,

Pankow²,

Odum³

et al. 1997

Environ. Sci. Technol.

146

118

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Gas/particle (G/P) partitioning is an important process that affects the deposition, chemical reactions, long-range transport, and impact on human and ecosystem health of atmospheric semivolatile organic compounds (SOCs). Gas/ particle partitioning coefficients (K p ) were measured in an outdoor chamber for a group of polynuclear aromatic hydrocarbons (PAHs) and n-alkanes sorbing to three types of model aerosol materials: solid ammonium sulfate, liquid dioctyl phthalate (DOP), and secondary organic aerosol (SOA) generated from the photooxidation of whole gasoline vapor. K p values were also measured for ambient n-alkanes sorbing to urban particulate material (UPM) during summer smog episodes in the Los Angeles metropolitan area. Based on the K p values obtained for the aerosols studied here, for environmental tobacco smoke (ETS), and for a quartz surface, we conclude that G/P partitioning of SOCs to UPM during summer smog episodes is dominated by absorption into the organic fraction in the aerosol. Comparisons of the partitioning of SOCs to three different types of aerosols demonstrate that (1) DOP aerosol may be a good surrogate for ambient aerosol that consists mainly of organic compounds from primary emissions; (2) ETS particles may be a good surrogate for SOA; and (3) the sorption properties of ambient smog aerosol and the chamber-generated SOA from gasoline are very similar. The similarities observed between ambient smog aerosol and chamber-generated SOA from gasoline support the use of literature SOA yield data from smog chamber studies to predict the extent of SOA formation during summer midday smog episodes.

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Section: Resultsmentioning

confidence: 99%

Gas/Particle Partitioning of Semivolatile Organic Compounds To Model Inorganic, Organic, and Ambient Smog Aerosols

Liang¹,

Pankow²,

Odum³

et al. 1997

Environ. Sci. Technol.

146

118

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show abstract

“…Much of the organic portion of the condensed material was found to be highly oxygenated, but comparatively low in volatility. Parallel studies of Grosjean and Friedlander 10 and O'Brien et al 11 have provided additional data on the behavior of organic aerosols in smog.…”

Section: Significance Of Changes In Chemical Compositionmentioning

confidence: 98%

summary of the California aerosol characterization experiment

Hidy

Appel

Charlson

et al. 1975

Journal of the Air Pollution Control Association

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“…Chemical analyses suggest that cyclic olefins account for much of the secondary organic matter in photochemical smog. 90 Terpenes and aromatics may also serve as precursors for secondary organics. Aerosols are produced more efficiently from cyclic olefins than from toluene, indicating that removal of such hydrocarbons from gasoline might result in improvement of visibility in certain locations.…”

Section: Compoundsmentioning

confidence: 99%

“…377 -378 Atmospheric aerosol samples were analyzed for their organic content using paper chromatograpy (PC) and infrared spectrometry to identify functionalities. 379 Reviews of TLC and PC have appeared.…”

Section: Chromatography and Ancillary Techniquesmentioning

confidence: 99%