Chemical conversion for ion mobility detectors using surface int

Details Chemical conversion for ion mobility detectors using surface int Chemical conversion for ion mobility detectors using surface int

1981-03-31

1983-03-29

Anderson, Bruce C.

Radiant energy

Ionic separation or analysis

Ion beam pulsing means with detector synchronizing means

250286, 250288, 250281, H01J 4940

Patent

active

043784992

ABSTRACT:
An ion mobility detector in which selectivity and sensitivity is enhanced by converting through surface interactions sample gas or vapor to a form more readily ionized or by converting through surface interactions interferent gas or vapor to a form less readily ionized. To accomplish the conversion, samples may be passed through a catalytically reactive filter prior to injection into the detector reaction region; exposed to a reactive coating placed on the surface of a permeable membrane prior to diffusion therethrough into the reaction region or exposed to a reactive coating placed on the interior walls of the reaction region.

REFERENCES:
patent: 1880333 (1932-10-01), Spindler
patent: 3626180 (1971-12-01), Carroll et al.
patent: 3697748 (1972-10-01), Cohen
patent: 4311669 (1982-01-01), Spangler

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