Determination of ethanol concentration of ethanol/water mixture solutions with open ended coaxial method

This study presents a simple and non-destructive procedure to determine ethanol concentration of ethanol/water solution at ambient temperature based on HP85070B open ended coaxial dielectric constant measurement. The motivation for this study stems from the fact that the `true' concentration of...

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Bibliographic Details
Published in2016 International Conference on Advances in Electrical, Electronic and Systems Engineering (ICAEES) pp. 652 - 656
Main Authors Khalid, Norashikin, Zainuddin, Mohamad Faiz, Abbas, Zulkifly, Mohamed, Tity Nazleen, Sabli, Nordin
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2016
Subjects
Debye model
Dielectric constant
Dielectric measurement
Ethanol
Ethanol concentration
Hydrometers
Mathematical model
open ended coaxial
Permittivity
Temperature measurement
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Summary:This study presents a simple and non-destructive procedure to determine ethanol concentration of ethanol/water solution at ambient temperature based on HP85070B open ended coaxial dielectric constant measurement. The motivation for this study stems from the fact that the `true' concentration of ethanol in a `labeled' container could be `spoiled' due to hygroscopic nature of ethanol, evaporation and other factors. The dielectric constant measurements of eight samples with different molar fraction were validated with modified Cole-Cole-Debye (3CC) simulations. A 5th degree polynomial calibration equation was developed based on 3CC simulations with R 2 = 0.9998 and used to estimate the `true' concentration of three ethanol samples obtained from `labeled' containers kept in laboratory. The ethanol concentrations of two of the samples were found to be much lower than what was indicated on their labels, hence, assumed spoiled.
DOI:10.1109/ICAEES.2016.7888127