“Drs Marvin Shaw (National Centre for Atmospheric Science, York, UK) and Mark Perkins (Anatune Ltd) described a remarkable laboratory and field study that benchmarked SIFT-MS performance against PTR-MS and GC for ambient air monitoring applications”


Vaughan Langford Syft Technologies Director - Applications & Marketing

Dr. Vaughan Langford

BSc(Hons), PhD


Principal Scientist / Consultant

At a recent Royal Society of Chemistry (RSC) meeting*, Drs Marvin Shaw (National Centre for Atmospheric Science, York, UK) and Mark Perkins (Anatune Ltd) described a remarkable laboratory and field study that benchmarked Selected Ion Flow Tube Mass Spectrometry (SIFT-MS) performance against Proton Transfer Reaction Mass Spectrometry (PTR-MS) and Gas Chromatography (GC) for ambient air monitoring applications:

“VOC measurements in ambient air using Selected Ion Flow Tube Mass Spectrometry (SIFT-MS) – automation and calibration considerations”

The laboratory work benchmarked the Syft Technologies Voice200ultra SIFT-MS instrument against a leading PTR-MS instrument. Sensitivities – in counts per second per ppb (cps/ppb, by volume) – are consistently better for a wide range of oxygenated VOCs and hydrocarbons. Furthermore, the use of multiple, rapidly switchable reagent ions provides enhanced selectivity and detection of a wider range of compounds in continuous ambient monitoring compared to PTR-MS.

Field deployment near Beijing, China in October to December 2016 saw the SIFT-MS technique evaluated alongside conventional gas chromatographic analysis with flame ionization detection (GC-FID). Very good correlation was observed for these real-time measurements. See for example the toluene data in the graph below.

Field deployment near Beijing, China in October to December 2016 saw the SIFT-MS technique evaluated alongside conventional gas chromatographic (GC) and (PTR-MS) analysis with flame ionization detection (GC-FID). Very good correlation was observed for these real-time measurements.

Courtesy of Dr Shaw and his co-authors, you can download a copy of the full presentation here.

*RSC meeting: “What’s new in the analysis of complex environmental matrices?”, 3 March 2017, London, United Kingdom.

 

Posted by Dr Vaughan Langford, Director of Applications and Marketing at Syft Technologies

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