Photo-ionization ion mobility spectrometry

Details Photo-ionization ion mobility spectrometry Photo-ionization ion mobility spectrometry

1997-03-11

1999-10-19

Soderquist, Arlen

Chemistry: analytical and immunological testing

Nuclear magnetic resonance, electron spin resonance or other...

250281, 250282, 250288, 436139, 436104, 436111, 436120, G01N 3300, H01J 4900, B01D 5944

Patent

active

059688378

ABSTRACT:
In a method for photo-ionization ion mobility spectrometry, a reagent gas is added, in particular an aromatic compound, which has a large ionization cross section in the range of ionizing VUV radiation, but a low probability for the formation of protonated quasi-molecular ions. In this way, the detection of only weakly proton affine substances is also amplified or even made possible at all, and also the detection of electronegative substances in a negative operating mode is improved. Preferred reagent gases are benzene, toluene and xylene. FIG. 1

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