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Diode Laser Based Formaldehyde Measurements in a Catalytic Trace Contaminant Control System
Technical Paper
2000-01-2303
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The development of a portable diode laser based gas sensor and its application to sensitive, selective, on-line monitoring of formaldehyde concentrations present in a catalytic Trace Contaminant Control System (TCCS) in a 5-day period in August 1999 is reported. The TCCS was originally developed for the Lunar-Mars Life Support Test program in 1996-1997 at NASA-JSC. The motivation for monitoring H2CO levels in a sealed human rated environment is that its presence can cause headaches, throat and ear irritation at low concentrations (>100 ppb), and more serious adverse effects at higher concentration levels. Consequently, NASA has established a spacecraft maximum allowable H2CO concentration of 40 ppb for crew exposure for a 7 to 180 days period [1].
Authors
Citation
Richter, D., Tittel, F., Bahr, J., Wickham, D. et al., "Diode Laser Based Formaldehyde Measurements in a Catalytic Trace Contaminant Control System," SAE Technical Paper 2000-01-2303, 2000, https://doi.org/10.4271/2000-01-2303.Also In
References
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- Tittel, F.K. Lancaster, D.G. Richter, D. Curl: R.F. Laser based absorption sensors for trace gas monitoring in a spacecraft habitat 29 th International Conference on Environmental Systems, Paper Number 99ES-102 - Denver July 1999
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