GeoVOC: A SIFT-MS method for the analysis of small linear hydrocarbons of relevance to oil exploration

Detection of monobromamine, monochloramine and dichloramine using selected ion flow tube mass spectrometry and their relevance as breath markers

“…The first has been described previously 3. The second is a smaller commercial version of the first and is known as the Voice 100 manufactured by Syft Technologies Ltd. (Christchurch, New Zealand),27 and has been described in some detail by Francis et al 10. In brief, volatile compounds (VCs) within a sample mixture in air are identified by chemical ionization reactions taking place within a flow tube reactor.…”

“…The SIFT‐MS technique has been used to quantify volatile compounds in human breath,1, 2 gases in the headspace of liquids3–5 and solid samples,6 volatiles from explosives,7 and environmental samples 8, 9. The technology can be used to monitor alkanes,9, 10 but not yet at the concentration levels required for ethane and pentane in the clinical environment. It has, however, enormous potential to detect and quantify trace gases in the exhaled breath of patients with various respiratory pathologies.…”

Application of Selected Ion Flow Tube Mass Spectrometry Coupled with Chemometrics to Study the Effect of Location and Botanical Origin on Volatile Profile of Unifloral American Honeys

“… References: [1]Arnold and others (1998), [2]Francis and others (2007), [3]Spanel and others (1997), [4]Spanel and Smith (1997), [5]Spanel and Smith (1998a), [6]Spanel and Smith (1998b), [7]Spanel and Smith (1998c), [8]Spanel and Smith (1999b), [9]Spanel and others (2002a), [10]Spanel and others (2002b), [11]Wang and others (2003), [12]Wang and others (2004a), [13]Wang and others (2004b), [14]Syft Technologies Inc. (2011). …”

Ionic diffusion and mass discrimination effects in the new generation of short flow tube SIFT-MS instruments

“…This drive towards smaller flow tubes is motivated by the need to reduce the size of the instruments, and especially of the required pumping systems, to allow easier transportation and location in confined spaces such as surgeries and hospitals. In this regard, the weight of the Profile 3 instrument is 120 kg compared to that of the TSIFT instruments which is typically 400 kg and the other commercially available instruments which are typically 200-500 kg [15]. However, such a drastic reduction in flow tube length has its downside in that the time available for the precursor ions to react with trace gases (see Section 1) is proportionally decreased and this implies a reduced sensitivity unless other parameters can be adjusted to compensate.…”