Input head of a measuring or identification system for chemical agents
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United States of America Patent
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Feb 28, 1984
Grant Date -
N/A
app pub date -
Nov 5, 1981
filing date -
Mar 10, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An input head for an active system for identifying and detecting chemical agents has a heated membrane directly exposed to a solid surface containing the agents to be detected. The chemical agents diffuse and traverse through the membrane and exit the rear membrane surface in a vaporized state. The membrane can be successively rinsed with a gas or used as a contact membrane as a first stage of a membrane separator acting as a direct admission system in a mass spectrometer. The input head provides a detection probe or sample admission system in which organic compounds that are likely to diffuse can be qualitatively and quantitatively detected in a sensitive and rapid procedure. The membrane of the input head is relatively thin but mechanically stable so that it may be brought into direct contact with contaminated solid surfaces.
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