PMID- 21500772
OWN - NLM
STAT- MEDLINE
DCOM- 20110902
LR  - 20131121
IS  - 1520-6882 (Electronic)
IS  - 0003-2700 (Linking)
VI  - 83
IP  - 10
DP  - 2011 May 15
TI  - Quasi-simultaneous acquisition of hard electron ionization and soft single-photon 
      ionization mass spectra during GC/MS analysis by rapid switching between both 
      ionization methods: analytical concept, setup, and application on diesel fuel.
PG  - 3865-72
LID - 10.1021/ac200356t [doi]
AB  - This work describes the realization of rapid switching between hard electron 
      ionization (EI) and soft single-photon ionization (SPI) integrated in a compact 
      orthogonal acceleration time-of-flight mass spectrometer. Vacuum-ultraviolet 
      (VUV) photons of 9.8 eV (126 nm) emitted from the innovative electron-beam-pumped 
      rare-gas excimer light source (EBEL) filled with argon are focused into the ion 
      chamber by an ellipsoidal mirror optic for accomplishing of SPI. This novel 
      orthogonal acceleration time-of-flight mass spectrometer with switching 
      capability was hyphenated to one-dimensional gas chromatography (GC) and 
      comprehensive two-dimensional (2D) gas chromatography (GC x GC) for the first 
      time. Within this demonstration study, a maximum switching frequency of 80 Hz was 
      applied for investigation of a mineral-oil-type diesel sample. This approach 
      allows the quasi-simultaneous acquisition of complementary information about the 
      fragmentation pattern (EI) as well as the molecular mass (SPI) of compounds 
      within a single analysis. Furthermore, by application of a polar GC column for 
      separation, the SPI data can be displayed in a 2D contour plot, leading to a 
      comprehensive 2D characterization (GC x MS), whereas the typical group-type 
      assignment for diesel is also met.
FAU - Eschner, Markus S
AU  - Eschner MS
AD  - Joint Mass Spectrometry Centre, Cooperation Group Analysis of Complex Molecular 
      Systems, Institute of Ecological Chemistry, Helmholtz Zentrum Munchen, 
      Ingolstadter Landstrasse 1, 85764 Neuherberg, Germany.
FAU - Groger, Thomas M
AU  - Groger TM
FAU - Horvath, Thomas
AU  - Horvath T
FAU - Gonin, Marc
AU  - Gonin M
FAU - Zimmermann, Ralf
AU  - Zimmermann R
LA  - eng
PT  - Journal Article
DEP - 20110418
PL  - United States
TA  - Anal Chem
JT  - Analytical chemistry
JID - 0370536
RN  - 0 (Gasoline)
RN  - 67XQY1V3KH (Argon)
SB  - IM
MH  - Argon/chemistry
MH  - Gas Chromatography-Mass Spectrometry/instrumentation/*methods
MH  - Gasoline/*analysis
MH  - Photons
EDAT- 2011/04/20 06:00
MHDA- 2011/09/03 06:00
CRDT- 2011/04/20 06:00
PHST- 2011/04/20 06:00 [entrez]
PHST- 2011/04/20 06:00 [pubmed]
PHST- 2011/09/03 06:00 [medline]
AID - 10.1021/ac200356t [doi]
PST - ppublish
SO  - Anal Chem. 2011 May 15;83(10):3865-72. doi: 10.1021/ac200356t. Epub 2011 Apr 18.