Method and apparatus for detecting dangerous substances

Details Method and apparatus for detecting dangerous substances Method and apparatus for detecting dangerous substances

1987-04-24

1989-04-11

Anderson, Bruce C.

Radiant energy

Ionic separation or analysis

Methods

250288, B01D 5944

Patent

active

048209201

ABSTRACT:
A method of detecting a dangerous substance such as explosives or drugs in an article (27) in transit comprises the steps of taking a sample of atmosphere (28) from the vicinity of the article, causing the sample to enter an ionization chamber (24) of a mass spectrometer (30), obtaining a mass spectrum of one or more constituents of the sample, comparing the mass spectrum with one or more reference spectra, and generating a signal indicative of any said dangerous substance in the sample.

REFERENCES:
patent: 2714164 (1955-07-01), Riggle et al.
patent: 3476968 (1969-11-01), Omura
patent: 3867631 (1975-02-01), Briggs
patent: 3920987 (1925-11-01), Anbar et al.
patent: 3999065 (1976-12-01), Briggs
patent: 4167667 (1979-09-01), Hall
patent: 4260886 (1981-04-01), Grilletto et al.
patent: 4314156 (1982-02-01), Kuppermann
patent: 4442353 (1984-04-01), Baubron

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