Discharge ionization detector

Details Discharge ionization detector Discharge ionization detector

1989-07-24

1990-12-04

Strecker, Gerard R.

Electricity: measuring and testing

Using ionization effects

For analysis of gas, vapor, or particles of matter

324459, 31511111, 31511191, G01N 2770

Patent

active

049756486

ABSTRACT:
A discharge ionization detector which comprises with a cylindrical housing wherein is formed a discharge chamber at one end, and wherein is formed an ionization chamber at the other end an aperture connecting the chambers, arc electrodes being located in the discharge chamber, and emitter/collector electrodes being located in the ionization chamber, the latter comprising flat parallel plates, the housing being provided with an inlet into the discharge chamber for delivering discharge gas to the discharge chamber which discharge gas leaves the discharge chamber through the aforementioned aperture, with an inlet into the ionization chamber for delivering sample gas to the ionization chamber, and with an outlet from the ionization chamber for carrying the mixed discharge gas and sample gas out of the ionization chamber. The discharge gas and sample gas mix then pass between the flat parallel emitter/collector plates before leaving the ionization chamber through the outlet. The ionization chamber should be less than about 500 microliters in volume.

REFERENCES:
patent: 3454828 (1969-07-01), Yamane
patent: 4114088 (1978-09-01), Laws
patent: 4789783 (1988-12-01), Cook

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