Distinguishing Liquid Solutions With Alcohol Using Electrical Impedance Measurements: Preliminary Study for Food Safety Applications

Methods for identifying contaminants in liquids (such as wine) typically require laboratory analyses of samples using precision equipment, which is expensive in terms of both time and required resources. Therefore, there is a need to identify alternative measurement approaches to reduce the cost in...

Full description

Saved in:
Bibliographic Details
Published in:IEEE sensors journal 2023-11, Vol.23 (22), p.26997-27007
Main Authors: Slay, John, Sotner, Roman, Freeborn, Todd J., Jerabek, Jan, Polak, Ladislav, Petrzela, Jiri, Vyplel, Vojtech
Format: Article
Language:English
Subjects:
Alcohol
Cole-Cole model
Contaminants
Distillates
Distilled water
Electrical impedance
electrical impedance spectroscopy (EIS)
extraction
Frequencies
Frequency measurement
Impedance
impedance analysis
Impedance measurement
Isopropanol
Liquids
Pollution measurement
Sensors
Spectroscopy
Water sampling
Windshields
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Methods for identifying contaminants in liquids (such as wine) typically require laboratory analyses of samples using precision equipment, which is expensive in terms of both time and required resources. Therefore, there is a need to identify alternative measurement approaches to reduce the cost in terms of equipment, personnel, and time. One sensing approach to characterize liquid properties and potentially identify contaminants is electrical impedance spectroscopy (EIS). In this work, the electrical impedance of 25-mL samples of three solutions with alcohol (plum distillate, isopropyl alcohol, and winter windshield solution) and a control sample of distilled water were measured using a Keysight 4294A. The liquids with alcohol content (plum distillate, isopropyl alcohol, and winter windshield solution) have lower impedance magnitude in the frequency band below 100 kHz, with specific values of 139, 76, and 7 \text{k}\Omega at 40 Hz, compared to the reference distilled water sample (approximately 315 \text{k}\Omega ). This suggests that solutions with alcohol (and other chemicals) have increased conductivity in comparison to the distilled water and that impedance may be a suitable approach to differentiate liquids with and without contaminants.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2023.3315798