Abstract

Measurements of the surface acoustic wave (SAW) attenuation versus time have been performed in liquids with a relatively high evaporation rate (acetone, ethyl acetate, etc.). The linear dependence of the SAW attenuation versus time has been observed. The possibility of determining the ‘unknown’ molecular mass of the liquid from the SAW attenuation versus time dependence is presented. The special experimental arrangement allows an easy, quick and sensitive measurement of the evaporation rate.

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