Study of Room Temperature Ionic Liquids as Gas Sensing Materials in Quartz Crystal Microbalances.

ABSTRACT: Twenty-eight quartz crystal microbalance (QCM) sensors coated with different sensing films were tested and analyzed in this work; twenty-three sensors were coated in different room temperature ionic liquids (RTILs) and five additional QCM sensors were coated with conventional films commonly used as stationary phases in gas chromatography. Four volatile organic compounds (VOCs), in gaseous phase-hexanol, butyl acetate, 2-hexanone, and hexanoic acid-were measured. Two transducer mechanisms were used; resonant frequency shift and resistance shift of a QCM Mason equivalent circuit. The sensors were characterized by their sensitivity to the VOCs and their discrimination power of the four VOCs. The highest separation among VOCs was obtained when frequency and resistance information of both RTIL

SUBMITTER: Aleixandre M 

PROVIDER: S-EPMC7411987 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature