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Title: A Vapor Generator Based Calibration System For Use As An Interim Standard For The Joint Chemical Agent Detector
Author: Christopher H. Clark, Mary m. Graupmann, Michael L. Bishop
Source: 2008 Measurement Science Conference
Year Published: 2008
Abstract: A system has been designed, constructed, and is in the process of being tested to provide a known concentration of chemical warfare agent (CWA) simulant to a Joint Chemical Agent Detector (JCAD). JCAD is a hand held ion mobility spectrometer that alerts a soldier to the presence of a CWA. The current JCAD iteration is commercially available from Smiths Detection under its trade name Light-weight Chemical Detector (LCD) 3.2E. Although the detector is not considered quantitative, it alarms at a threshold value and this value requires calibration. The system here uses a Kin-tek vapor generator in conjunction with a 10-port valve and Agilent 7890/5975 gas chromatograph-mass spectrometer (GC/MS) to assure the concentration delivered to the JCAD is precise and accurate. In practice this system would serve as a depot-level standard to be calibrated by NIST once a high-level chemical simulant standard exists. Current work has focused on integrating the 10-port valve, GC/MS, and vapor generator, assuring they work in concert to produce accurate and precise concentrations.

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