Abstract
The sorption specifics of various classes of volatile amines on thin films of organic acid-base indicators is studied by piezoelectric quartz micro weighing. The differences in the sorption behavior of amines on indicator films obtained from ethanolic and acetone solutions are revealed. The influence of the indicator acidity on the sorption of amine vapors is studied. An array of piezoelectric sensors based on thin films of acid-base indicators is developed and an algorithm of registering their responds to amines of different structures is proposed for their separate determination in a mixture.
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