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Evaluation of a gas chromatograph-differential mobility spectrometer for potential water monitoring on the international space station (Document No: 20140011146)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Wallace, William T. Gazda, Daniel B. Dwivedi, Prabha Limero, Thomas F. Macatangay, Ariel V. Fernandez, Facundo M. |
| Copyright Year | 2015 |
| Description | Environmental monitoring for manned spaceflight has long depended on archival sampling, which was sufficient for short missions. However, the longer mission durations aboard the International Space Station (ISS) have shown that enhanced, real-time monitoring capabilities are necessary in order to protect both the crewmembers and the spacecraft systems. Over the past several years, a number of real-time environmental monitors have been deployed on the ISS. Currently, volatile organic compounds (VOCs) in the station air are monitored by the Air Quality Monitor (AQM), a small, lightweight gas chromatograph-differential mobility spectrometer. For water monitoring, real-time monitors are used for total organic carbon (TOC) and biocide analysis. No information on the actual makeup of the TOC is provided presently, however. An improvement to the current state of environmental monitoring could be realized by modifying a single instrument to analyze both air and water. As the AQM currently provides quantitative, compound-specific information for VOCs in air samples, this instrument provides a logical starting point to evaluate the feasibility of this approach. The major hurdle for this effort lies in the liberation of the target analytes from the water matrix. In this presentation, we will discuss our recent studies, in which an electro-thermal vaporization unit has been interfaced with the AQM to analyze target VOCs at the concentrations at which they are routinely detected in archival water samples from the ISS. We will compare the results of these studies with those obtained from the instrumentation routinely used to analyze archival water samples. |
| File Size | 8129 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140011146 |
| Archival Resource Key | ark:/13960/t0jt4nz5c |
| Language | English |
| Publisher Date | 2015-01-01 |
| Access Restriction | Open |
| Subject Keyword | Man/system Technology And Life Support Volatile Organic Compounds Gas Chromatography Water Sampling International Space Station Air Sampling Spectrometers Water Quality Spacecraft Environments Air Quality Space Flight Environmental Monitoring Real Time Operation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
