Puff-by-puff resolved characterisation of cigarette mainstream smoke by single photon ionisation (SPI)-time-of-flight mass spectrometry (TOFMS): Comparison of the 2R4F research cigarette and pure Burley, Virginia, Oriental and Maryland tobacco cigarettes

2006 ◽  
Vol 572 (2) ◽  
pp. 219-229 ◽  
Author(s):  
Thomas Adam ◽  
Stefan Mitschke ◽  
Thorsten Streibel ◽  
Richard R. Baker ◽  
Ralf Zimmermann
2015 ◽  
Vol 11 (A29A) ◽  
pp. 305-306
Author(s):  
Marko Förstel ◽  
Ralf I. Kaiser

AbstractExploiting reflectron time of flight mass spectrometry coupled with single photon ionization of the subliming molecules (PI-ReTOF-MS) during the temperature programmed desorption (TPD) and combining these data with on line and in situ infrared spectroscopy (FTIR), a versatile experimental approach has been established to elucidate the formation pathways of complex organic molecules in interstellar analog ices upon interaction with ionizing radiation at astrophysically relevant temperatures as low as 5 K.


2007 ◽  
Vol 85 (10) ◽  
pp. 843-852 ◽  
Author(s):  
Y Liu ◽  
S Consta ◽  
F Ogeer ◽  
Y J Shi ◽  
R H Lipson

Hydrogen-bonded clusters, formed above liquid methanol (Me) and ethanol (Et) mixtures of various compositions, were entrained in a supersonic jet and probed using 118 nm vacuum ultraviolet (VUV) laser single-photon ionization/time-of-flight mass spectrometry. The spectra are dominated by protonated cluster ions, formed by ionizing hydrogen-bonded MemEtn neutrals, m = 0–4, n = 0–3, and m + n = 2–5. The structures and energetics of the neutral and ionic species were investigated using both the all-atom optimized potential for liquid state, OPLS-AA, and the density functional (DFT) calculations. The energetic factors affecting the observed cluster distributions were examined. Calculations indicate that the large change in binding energy going from trimer to tetramer can be attributed more to pair-wise interactions than to cooperativity effects.Key words: alcohol clusters, cluster formation, DFT calculations, mass spectrometry, vacuum ultraviolet laser.


Fuel ◽  
2016 ◽  
Vol 177 ◽  
pp. 334-342 ◽  
Author(s):  
H. Czech ◽  
O. Sippula ◽  
M. Kortelainen ◽  
J. Tissari ◽  
C. Radischat ◽  
...  

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