| Title: | "A preconcentrator coupled to a GC/FTMS: advantages of self-chemical ionization, mass measurement accuracy, and high mass resolving power for GC applications" |
| Author(s): | Solouki T; Szulejko JE; Bennett JB; Graham LB; |
| Address: | "Department of Chemistry, University of Maine, Orono, Maine 04469, USA. solouki@maine.edu" |
| DOI: | 10.1016/j.jasms.2004.03.003 |
| ISSN/ISBN: | 1044-0305 (Print) 1044-0305 (Linking) |
| Abstract: | "Coupling of a cryogenic preconcentrator (PC) to a gas chromatograph/Fourier transform ion cyclotron resonance mass spectrometer (GC/FT-ICR MS) is reported. To demonstrate the analytical capabilities of the PC/GC/FT-ICR MS, headspace samples containing volatile organic compounds (VOCs) emitted from detached pine tree twigs were analyzed. Sub-ppm mass measurement accuracy (MMA) for highly resolved (m/Deltam(50%) > 150 k) terpene ions was achieved. Direct PC/GC/FT-ICR MS analyses revealed that detached twigs from pine trees emit acetone, camphor, and four detectable hydrocarbon isomers with C(10)H(16) empirical formula. The unknown analytes were identified based on accurate mass measurement and their mass spectral appearances. Authentic samples were used to confirm initially unknown identifications. Self-chemical-ionization (SCI) reactions furnished an additional dimension for rapid isomer differentiation of GC eluents in real time" |
| Keywords: | "Cyclotrons Flame Ionization Gas Chromatography-Mass Spectrometry/*methods Hydrocarbons/analysis Molecular Weight Pinus/chemistry Reproducibility of Results Spectroscopy, Fourier Transform Infrared Volatilization Wood;" |
| Notes: | "MedlineSolouki, Touradj Szulejko, Jan E Bennett, Justin B Graham, LeRae B eng Research Support, U.S. Gov't, Non-P.H.S. 2004/07/28 J Am Soc Mass Spectrom. 2004 Aug; 15(8):1191-200. doi: 10.1016/j.jasms.2004.03.003" |
