Compared with previous U.S. space flight missions, the risk of atmospheric contamination on board Space Station
Achieving the performance requirements established for the VOA within power and weight constraints led to a novel approach in which gas chromatography (GC) was combined with ion-mobility spectrometry (IMS). Both GC and IMS have been used successfully for aspects of environmental monitoring and analysis; however, only a few research-oriented efforts have been undertaken to interface the two technologies. This paper describes the development of a gas chromatograph/ion-mobility spectrometer (GC/IMS) system to be used to detect volatile organic compounds on SSF. The sample concentrator, high temperature IMS cell, and GC-IMS interface will be emphasized. Analysis of data collected during initial evaluations of the GC/IMS will be presented. Mobility spectra, chromatograms of mixtures, and concentration studies will be highlighted. In addition, future applications of this system will be discussed.