Organophosphorus selective ion mobility spectrometer

Details Organophosphorus selective ion mobility spectrometer Organophosphorus selective ion mobility spectrometer

1984-02-17

1988-01-05

Terapane, John F.

Chemistry: analytical and immunological testing

Measurement of electrical or magnetic property or thermal...

Of an ionized gas

422 54, 436106, 436103, 436114, C12P 732

Patent

active

H00004065

ABSTRACT:
An ion mobility spectrometer for analysis of a gaseous sample wherein only nitrogen and phosphorus containing molecules of the sample are ionized. The spectrometer is of the type having an ion source for ionizing the sample gas and a shutter for gating ions into a drift region, wherein an electric field gradient exists. The ion source includes a bead which comprises a thermally stable material, such as a ceramic or glass, having an alkali metal compound on its surface. The bead is immersed in a gaseous mixture of hydrogen and air, and is heated to a temperature of 200.degree.-1000.degree. C. The bead selectively ionizes phosphorus and nitrogen containing molecules of the sample upon contact with the bead.

REFERENCES:
patent: 2550498 (1951-04-01), Rice
patent: 3589869 (1971-06-01), Scolnick
patent: 3845301 (1974-10-01), Wernlund et al.
patent: 3850579 (1974-11-01), Dubsky
patent: 3864575 (1975-02-01), Hashmi et al.
patent: 4203726 (1980-05-01), Patterson
patent: 4311669 (1982-01-01), Spangler
Patterson, "Selective Responses of Flameless Thermionic Detector" Journal of Chromatography 1978, No. 167, pp. 381-397, CA 90(16): 132332 C.
Patterson, "Thermionic Nitrogen-Phosphorous Detection With an Alkali-Ceramic Bead" J. Chromatogr. Sci. 16(7), pp. 275-280 (1978).
J. P. Carrico et al., "Simple Electrode Design For ION Mobility Spectrometer" Journal of Physics E: vol. 16, 1983, pp. 1058-1062.
Paul L. Patterson et al., "Thermionic Nitrogen-Phosphorus Detection With An Alkali-Ceramic Bead" Journal of Chromatographic Science, vol. 16, Jul. 1978, pp. 275-280.
J. A. Lubkowitz et al., "Preparation And Characterization Of Glass Beads For Use In Thermionic Gas Chromatolgraphic Detectors" Analytical Chemistry, vol. 50, No. 4, Apr. 1978, pp. 672-676.

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