I. S. Shchemelev, T. V. Zinov’ev, A. V. Ivanov, N. B. Ferapontov
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引用次数: 0
Abstract
The application of composite films consisting of crosslinked polyvinyl alcohol and magnetite as sensitive elements in the determination of the composition of aqueous solutions by digital colorimetry is described. A novel approach to fabricating composite materials of the composition hydrophilic polymer–magnetite is proposed; it involves the precipitation of Fe3O4 particles in ammonia vapors. The sensor films produced by this method were employed for determining the volume fraction of alcohol in products characterized by high alcohol content. The limit of detection for ethanol was determined at 63 vol %, while for isopropanol, it 24 vol %. The efficacy of the proposed sensor materials was assessed through in an analysis of liquid hand sanitizers.
期刊介绍：
The Journal of Analytical Chemistry is an international peer reviewed journal that covers theoretical and applied aspects of analytical chemistry; it informs the reader about new achievements in analytical methods, instruments and reagents. Ample space is devoted to problems arising in the analysis of vital media such as water and air. Consideration is given to the detection and determination of metal ions, anions, and various organic substances. The journal welcomes manuscripts from all countries in the English or Russian language.
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