Apparatus for thermally evolving chemical analytes from a removable substrate
Abstract
Method and apparatus suited to convenient field use for heating a porous metallic substrate swiped on the surface of an article possibly bearing residue of contraband or other target chemical substances. The preferred embodiment of the device includes means for holding the swiped substrate between electrodes bearing opposite electrical charges, thereby completing an electrical circuit in which current can flow through the porous metallic substrate. Resistance causes the substrate to heat, thus driving adherent target chemicals, if present, into a space from which they are carried via gas flow into a detector such as a portable IMS for analysis.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1174349
- Patent Number(s):
- 6572825
- Application Number:
- 09/410,976
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE
Citation Formats
Linker, Kevin L., and Hannum, David W. Apparatus for thermally evolving chemical analytes from a removable substrate. United States: N. p., 2003.
Web.
Linker, Kevin L., & Hannum, David W. Apparatus for thermally evolving chemical analytes from a removable substrate. United States.
Linker, Kevin L., and Hannum, David W. Tue .
"Apparatus for thermally evolving chemical analytes from a removable substrate". United States. https://www.osti.gov/servlets/purl/1174349.
@article{osti_1174349,
title = {Apparatus for thermally evolving chemical analytes from a removable substrate},
author = {Linker, Kevin L. and Hannum, David W.},
abstractNote = {Method and apparatus suited to convenient field use for heating a porous metallic substrate swiped on the surface of an article possibly bearing residue of contraband or other target chemical substances. The preferred embodiment of the device includes means for holding the swiped substrate between electrodes bearing opposite electrical charges, thereby completing an electrical circuit in which current can flow through the porous metallic substrate. Resistance causes the substrate to heat, thus driving adherent target chemicals, if present, into a space from which they are carried via gas flow into a detector such as a portable IMS for analysis.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 03 00:00:00 EDT 2003},
month = {Tue Jun 03 00:00:00 EDT 2003}
}
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