A method for near real time continuous air monitoring of phosgene, hydrogen cyanide, and cyanogen chloride
Conference
·
OSTI ID:492268
- Army Edgewood Research, Development and Engineering Center, Aberdeen Proving Ground, MD (United States)
- Dynatherm, Inc., Kelton, PA (United States)
A sorbent-based gas chromatographic method provides continuous quantitative measurement of phosgene, hydrogen cyanide, and cyanogen chloride in ambient air. These compounds are subject to workplace exposure limits as well as regulation under terms of the Chemical Arms Treaty and Title III of the 1990 Clean Air Act amendments. The method was developed for on-site use in a mobile laboratory during remediation operations. Incorporated into the method are automated multi-level calibrations at time weighted average (TW) concentrations, or lower. Gaseous standards are prepared in fused silica lined air sampling canisters, then transferred to the analytical system through dynamic spiking. Precision and accuracy studies performed to validate the method are described. Also described are system deactivation and passivation techniques critical to optimum method performance.
- OSTI ID:
- 492268
- Report Number(s):
- CONF-960848--; ISBN 0-8194-2223-1
- Country of Publication:
- United States
- Language:
- English
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