Detection method for checking surfaces for nitrogen-containing explosives or drugs
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United States of America Patent
Stats
-
Dec 19, 1995
Issued Date -
N/A
app pub date -
Jul 29, 1994
filing date -
Mar 20, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a method of rapidly checking surfaces for the presence of traces of specific compounds such as certain explosives and drugs. A hand-covering such as a cotton glove is used to wipe surfaces to pick up particles of the specific compound which may indicate the presence of larger amounts or previous contact of a surface by a person who has handled the compound. The particles are transferred--unheated--to collection surfaces of a hand-held sample probe by vacuuming of the gloved hand by the battery-operated probe. Heat is then supplied by a source external to the probe to vaporize the particles, and the vapors are analyzed by a suitable technique such as high speed gas chromatography. The method permits checking of surfaces for explosives at processing rates of up to several samples per minute.
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