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Open Access Green as soon as Postprint is submitted to ZB.
Highly time-resolved imaging of combustion and pyrolysis product concentrations in solid fuel combustion: NO formation in a burning cigarette.
Anal. Chem. 87, 1711-1717 (2015)
The highly dynamic, heterogeneous combustion process within a burning cigarette was investigated by a miniaturized extractive sampling probe (microprobe) coupled to photoionization mass spectrometry using soft laser single photon ionization (SPI) for online real-time detection of molecular ions of combustion and pyrolysis products. Research cigarettes smoked by a smoking machine are used as a reproducible model system for solid-state biomass combustion, which up to now is not addressable by current combustion-diagnostic tools. By combining repetitively recorded online measurement sequences from different sampling locations in an imaging approach, highly time- and space-resolved quantitative distribution maps of, e.g.; nitrogen monoxide, benzene, and oxygen concentrations were obtained at a near microscopic level. The obtained quantitative distribution maps represent a time-resolved, movie-like imaging of the respective compounds formation and destruction zones in the various combustion and pyrolysis regions of a cigarette during puffing. Furthermore, spatially resolved kinetic data were ascertainable. The here demonstrated methodology can also be applied to various heterogenic combustion/pyrolysis or reaction model systems, such as fossil- or biomass-fuel pellet combustion or to a positional resolved analysis of heterogenic catalytic reactions.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Flight Mass-spectrometry; Single-photon Ionization; Polycyclic Aromatic-hydrocarbons; Enhanced Multiphoton Ionization; Laminar Premixed Flames; Nitrogen Conversion; Mainstream Smoke.; Smoking Cycle; Online; Gas
ISSN (print) / ISBN
0003-2700
e-ISSN
1520-6882
Journal
Analytical Chemistry
Quellenangaben
Volume: 87,
Issue: 3,
Pages: 1711-1717
Publisher
American Chemical Society (ACS)
Publishing Place
Washington
Non-patent literature
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Reviewing status
Peer reviewed