Professor Lucy Carpenter of the prestigious Wolfson Atmospheric Chemistry Laboratories (WACL) at the University of York, United Kingdom, recently selected Selected Ion Flow Tube Mass Spectrometry (SIFT-MS) instrumentation for measuring volatile organic compound (VOC) fluxes in urban environments. VOC flux determinations require detection at part-per-trillion levels coupled with very high sampling rates (typically at least two data points per second per compound). Syft Technologies’ Voice200ultra instruments easily fulfill these requirements.
Professor Carpenter has made a very bold move in selecting SIFT-MS for this extremely demanding research, because the decision charts a new course for analysis of VOC fluxes. Unlike other direct, high-sensitivity mass spectrometry techniques, SIFT-MS utilizes multiple rapidly switchable reagent ions (switching occurs in less than 10 milliseconds). The best reagent ion can be used for each compound within the 0.5-second measurement window. This provides greatly enhanced selectivity, especially when coupled with the ultra-soft ionization utilized in SIFT-MS, which produces less fragmentation than drift tube techniques. The additional reagent ions also enable SIFT-MS to analyze a wider range of compounds, including small chlorinated species.
You can read more about the ground-breaking SIFT-MS research planned by Professor Carpenter here.