Alcohol Solutions Impedance and Equivalent Circuits

Abstract

We measured the S-parameters of six different types of liquid samples, such as aqueous alcohol solutions, NaCl ionic solutions, alcoholic beverages, and fruit juices in the 1 to 100 MHz frequency range, and calculated their impedance and admittance. Equivalent circuits of the liquid samples were synthesized by curve fitting on a Smith chart and Cartesian coordinates. The relationship between the impedance, admittance, and circuit element values of the synthesized equivalent circuit and the ethanol C2H5OH, polar water molecule H2O, and cation (K+ ion) that constitute the liquid sample was analyzed. Distilled alcoholic beverages showed a high impedance, but the impedance decreased after aging. Non-distilled alcoholic beverages showed a significant decrease in impedance due to cation (K+ ion). The impedance of the dehydrated reduced concentrated beverage increased significantly due to the reduction of cation (K+ ion).