期刊
MASS SPECTROMETRY LETTERS
卷 3, 期 2, 页码 29-38出版社
KOREAN SOC MASS SPECTROMETRY
DOI: 10.5478/MSL.2012.3.2.29
关键词
Gas chromatography; Atmospheric pressure photoionization (APPI); Linear ion trap (LIT); Orbitrap; Volatile compounds
类别
资金
- Iowa State University, U.S. DOE
- U.S. Department of Education
- Ames Laboratory, U.S. DOE
A new approach of volatile compounds analysis is proposed using a linear ion trap Orbitrap mass spectrometer coupled with gas chromatography through an atmospheric pressure photoionization interface. In the proposed GC-HRMS/MS approach, direct chemical composition analysis is made for the precursor ions in high resolution MS spectra and the structural identifications were made through the database search of high quality MS/MS spectra. Successful analysis of a complex perfume sample was demonstrated and compared with GC-EI-Q and GC-EI-TOF. The current approach is complementary to conventional GC-EI-MS analysis and can identify low abundance co-eluting compounds. Toluene co-sprayed as a dopant through API probe significantly enhanced ionization of certain compounds and reduced oxidation during the ionization.
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