Ultrasonic velocity measurements in ethanol-water and methanol-water mixtures

摘要

In this study, ultrasonic velocity measurements were used to estimate the alcohol type and volume concentration in water-alcohol binary mixtures. Varying mixtures of ethanol in water and methanol in water were prepared and the ultrasonic velocities for each concentration level were measured between 10 and 50 °C. Results of the statistical analyses indicated that ultrasonic velocity measurements can be used to distinguish between ethanol and methanol in a water-alcohol binary mixture and to estimatethe alcohol concentration level. The results were validated by testing three commercial liquids with known ethanol concentrations and one commercial liquid with a known methanol concentration.