Pulsed-valve chemical ionization for gas chromatography/fourier-transform mass spectrometry

✍ Scribed by David A. Laude Jr.; Carolyn L. Johlman; Robert S. Brown; Carl F. Ijames; Charles L. Wilkins

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 665 KB
• Volume: 178
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)86258-3

✦ Synopsis

The pressure requirements for chemical ionization g.c./F.t.m.s. which restrict mass resolution and accuracy are overcome through use of a pulsed valve that provides momentary reagent gas pressures. For alternate electron impact (EI)/chemical ionization (c.i.) g.c./F.t.m.s., similar resolution for both e.i. and c.i. data is demonstrated. The efficiency of chemical ionization with the pulsed valve is similar to static high pressure c.i. measurements of several model compounds. Results from the analysis of peppermint oil and a fuel additive illustrate the potential information available from a single g.c./F.t.m.s. experiment.