Vapor sampling probe

Details Vapor sampling probe Vapor sampling probe

1989-04-24

1990-03-20

Williams, Hezron E.

Measuring and testing

Sampler, sample handling, etc.

Capture device

7386312, G01N 124

Patent

active

049090909

ABSTRACT:
Disclosed is a portable, hand-held vapor sampling probe for collecting vapors of compounds such as cocaine, heroin, and explosives prior to their desorption and analysis in a vapor detector. Rechargable batteries power a lamp in the front face of the probe for heating target portions of a sampling surface, a puffer assembly for directing air jets at the target, and a motor for drawing air samples through a collector coil on whose surfaces vapors are trapped. A flexible U-shaped shroud on the front face partially encloses the lamp and collector and helps to regulate air flow over the target and to protect the probe from damage. Upon contact with a surface, the shroud may activate a switch which, together with a second switch on the probe handle and a lamp pyrometer, regulates heating of the target.

REFERENCES:
patent: 3067619 (1962-12-01), Fielding
patent: 3748905 (1973-07-01), Fletcher et al.
Vacuum Probe Sampler Removes Micron-Sized Particles from Surfaces, In AEC-NASA Tech Brief 68-10231, Jul. 1968.
Spangler, G. E. et al., Analysis of Explosives and Explosive Residues with Ion Mobility Spectrometry (IMS), In Proceedings of the International Symposium on the Analysis and Detection of Explosive, Mar. 1983, pp. 267-282.

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