Method of detecting a contraband substance

Details Method of detecting a contraband substance Method of detecting a contraband substance

G - Physics

01

V

73/100, 73/102

G01V 9/00 (2006.01) G01N 1/02 (2006.01) G01N 1/28 (2006.01)

Patent

CA 1224940

TITLE: METHOD OF DETECTING A CONTRABAND SUBSTANCE ABSTRACT OF THE DISCLOSURE A method of detecting contraband substances in freight cargo containers in which the container is agi- tated to disturb particulates therein, and air containing such particulates is then sampled and the particulates collected. The collected particulates include naturally occurring particulates which have absorbed vapors of the contraband substance during the entire time that the con- tainer has been closed, and also include particulates of the contraband substance itself. The collected particu- lates are heated to drive off vapors indicative of the contraband substance and the vapors are analyzed in a mass analyzer.

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