Work

A novel method for measuring electrolytic conductivity with a polarization impedance control function

Year: 2024

Type: article

Abstract: The article presents an idealized model of the differential method utilized in conductometry to measure electrolytic conductivity (EC). It identifies the main drawback of the widely used differential method: the inability to control the influence of polarization impedance on EC measurement results. A criterion for the absence of error caused by polarization effects is proposed, involving equality between the ratios of resistance differences and cell constant differences. A novel method for EC measurement, termed the double differential method, is introduced. This method relies on repeated differential impedance measurements and incorporates an additional third impedance measurement of a virtual liquid column. The new approach enables the identification of polarization impedance influence on EC measurements and the calculation of measurement errors for correction. A 3 times lower type A measurement uncertainty value can be achieved by averaging the corrected results.

Source: Measurements infrastructure

DOI: 10.33955/v8(2024)-061

Authors: Oleksii Stennik, Oleksandr Mikhal

Institutions: State Enterprise «All-Ukrainian State Research and Production Center for Standardization, Metrology, Certification and Consumers Rights Protection», National Academy of Sciences of Ukraine, Institute of Electrodynamics

Language: English

Topic: Scientific Measurement and Uncertainty Evaluation

Subfield: Statistics, Probability and Uncertainty

Field: Decision Sciences

Domain: Social Sciences

Open Access status: diamond

OpenAlex ID: W4402185559

FWCI:

Cites: 18

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Related to: 10