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| Titel |
A laboratory flow reactor with gas particle separation and on-line MS/MS for product identification in atmospherically important reactions |
| VerfasserIn |
J. F. Bennett, F. Collin, D. R. Hastie |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 2, no. 2 ; Nr. 2, no. 2 (2009-12-14), S.813-823 |
| Datensatznummer |
250000586
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| Publikation (Nr.) |
 copernicus.org/amt-2-813-2009.pdf |
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| Zusammenfassung |
| A system to study the gas and particle phase products from gas phase
hydrocarbon oxidation is described. It consists of a gas phase photochemical
flow reactor followed by a diffusion membrane denuder to remove gases from
the reacted products, or a filter to remove the particles. Chemical analysis
is performed by an atmospheric pressure chemical ionization (APCI) triple
quadrupole mass spectrometer. A diffusion membrane denuder is shown to
remove trace gases to below detectable limits so the particle phase can be
studied. The system was tested by examining the products of the oxidation of
m-xylene initiated by HO radicals. Dimethylphenol was observed in both the
gas and particle phases although individual isomers could not be identified.
Two furanone isomers, 5-methyl-2(3H)furanone and 3-methyl-2(5H)furanone were
identified in the particulate phase, but the isobaric product 2,5 furandione
was not observed. One isomer of dimethyl-nitrophenol was identified in the
particle phase but not in the gas phase. |
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