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Open AccessArticle

Application of Ion Mobility Spectrometry for Permeability Studies of Organic Substances through Polymeric Materials

Faculty of Advanced Technologies and Chemistry, Military University of Technology, ul. gen. Sylwestra Kaliskiego 2, 00-908 Warsaw 46, Poland
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Molecules 2020, 25(13), 2983; https://doi.org/10.3390/molecules25132983 (registering DOI)
Received: 22 May 2020 / Revised: 25 June 2020 / Accepted: 29 June 2020 / Published: 29 June 2020
(This article belongs to the Section Analytical Chemistry)
Drift tube ion mobility spectrometers (DT IMS) allow the concentration of different organic compounds to be measured. This gives the opportunity to use these detectors in measuring the penetration of various substances through polymer membranes. Permeation measurements of two substances (2-heptanone and dimethyl methylphosphonate (DMMP)) through a cylindrical silicone rubber membrane were carried out. The membrane separated the aqueous solution from the air. The analyte was introduced into water, and then its concentration in air on the opposite side of the membrane was recorded. Based on the dynamics of detector signal changes, the diffusion coefficients for both tested substances were determined. Determination of permeability coefficients was based on precise quantitative measurements, which took into account the non-linearity of the detector characteristics and the effect of water on detection sensitivity. The analysis of measurement results was based on a mathematical description of diffusion process. View Full-Text
Keywords: diffusion in polymers; permeability; tubular membrane; extraction from water; ion mobility spectrometry diffusion in polymers; permeability; tubular membrane; extraction from water; ion mobility spectrometry
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Wiśnik-Sawka, M.; Budzyńska, E.; Puton, J. Application of Ion Mobility Spectrometry for Permeability Studies of Organic Substances through Polymeric Materials. Molecules 2020, 25, 2983.

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