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| Titel: |
Formation of Polyketones in Irradiated Toluene/Propylene/NO x /Air Mixtures |
| Auteur: |
Edney, E. O. Driscoll, D. J. Weathers, W. S. Kleindienst, T. E. Conver, T. S. McIver, C. D. Li, W. |
| Verschenen in: |
Aerosol science and technology |
| Paginering: | Jaargang 35 (2001) nr. 6 pagina's 998-1008 |
| Jaar: |
2001-12-01 |
| Inhoud: |
A laboratory study was carried out to investigate the formation of polyketones in secondary organic aerosol from photooxidation of the aromatic hydrocarbon toluene, a major constituent of automobile exhaust. The laboratory experiments consisted of irradiating toluene/propylene/NO x /air mixtures in a smog chamber operated in the dynamic mode and collecting submicron secondary organic aerosol samples on Zefluor filters and on stainless steel disks in a low pressure cascade impactor. Carbonyl oxidation products in methanol extracts of the filters were derivatized using O-(2,3,4,5,6,-pentafluorobenzyl)-hydroxylamine, and the oxime derivatives were detected with a positive chemical ionization gas chromatography ion trap mass spectroscopy (GC-ITMS) system. Infrared spectra of the cascade impactor samples were used to determine the chemical functional group concentrations of the aerosol. The results of the GC-ITMS and infrared spectral analyses were consistent with the formation of multifunctional oxygenates, including hydroxy diones as well as triones, tetraones, and pentaones. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 5 van 9 gevonden artikelen
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