Detection and Identification of VOCs Using Differential Ion Mobility Spectrometry (DMS)

Abstract

The article presents a technique of differential ion mobility spectrometry (DMS) applicable to the detection and identification of volatile organic compounds (VOCs) from such categories as n-alkanes, alcohols, acetate esters, ketones, botulinum toxin, BTX, and fluoro- and chloro-organic compounds. A possibility of mixture identification using only the DMS spectrometer is analyzed, and several examples are published for the first time. An analysis of different compounds and their mechanisms of fragmentation, influence on effective ion temperature, and high electric field intensity is discussed.

Machine learning and signal processing assisted differential mobility spectrometry (DMS) data analysis for chemical identification

“…3,6 From a practical point of view, DMS has been studied for detecting biological and chemical agents, 9 ion ltration, 5 water 10 and air 11 quality monitoring, disease diagnostics, [12][13][14][15] and differentiating chemicals. 16 Signicant ongoing research focuses on formulating effective DMS data analysis strategies. 1,17,18 There are also reports showing a wide range of applications of hyphenated DMS devices, e.g., gas chromatography-DMS, 19 DMS-mass spectrometry, 5 DMS-DMS 20 for rapid separation and detection.…”