Thermal desorption/pyrolysis coupled with photo ionisation time-of-flight mass spectrometry for the analysis and discrimination of pure tobacco samples

Real-time analysis of soot emissions from bituminous coal pyrolysis and combustion with a vacuum ultraviolet photoionization aerosol time-of-flight mass spectrometer

“…To overcome these difficulties, fast and in situ mass spectrometric techniques, especially aerosol mass spectrometers combining with soft ionization methods, e.g. vacuum ultraviolet (VUV) photoionization techniques (Woods et al, 2001;Sykes et al, 2002;Oktem et al, 2004;Mysak et al, 2005;Gloaguen et al, 2006;Canagaratna et al, 2007;Northway et al, 2007;Streibel et al, 2007) have been developed, enabling on-line analyses of the chemical compositions of aerosols. VUV photoionization is a soft ionization technique; the organic molecules undergo much less fragmentation during the VUV photoionization process compared with the electron impact (EI) ionization (Northway et al, 2007).…”

Integration of Time and Spatially Resolved In-Situ Temperature and Pressure Measurements With Soft Ionisation Mass Spectrometry Inside Burning Superslim and King-Size Cigarettes

“…Our approach builds on recent work by LI et al in which a semi-automatic sampling stage was used to obtain two-dimensional measurements of temperature and pressure inside a burning cigarette, yielding gradient maps of temperature and pressure as a function of time during smouldering and puffing (21)(22)(23)(24). The temperature and pressure sensor arrays were combined with a microprobe for simultaneous sampling of the gas flow for chemical analysis by single-photon soft ionisation time-of-flight mass spectrometry (SPI-TOF-MS) (12), an analytical technique that allows both real-time measurements of volatile organic compounds, and on-line puff-bypuff monitoring of tobacco smoke constituents ranges (26,1,2,27). Synchronisation of the different measurement techniques was achieved by mapping pairs of probes (e.g., temperature/chemistry or temperature/pressure) at the same time points, and the data were handled by software specifically designed to integrate and visualize the physical and chemical events.…”

Pyrolysis-Gas Chromatography/Multiphoton Ionization/ Time-of-Flight Mass Spectrometry for the Rapid and Selective Analysis of Polycyclic Aromatic Hydrocarbons in Aerosol Particulate Matter

“…One possible system is a GC-MS that uses a pyrolyzer for the sample introduction. [28][29][30][31][32] A portable Curie-point pyrolyzer has recently become commercially available, where a sample can be safely and rapidly introduced into a GC. 33 Though the influence of an impurity is a possibility for environmental samples that have had no pretreatment, the use of a laser for MPI would successfully enhance selectivity.…”