Journal ArticleDOI
System for absolute measurement of electrolytic conductivity in aqueous solutions based on van der Pauw's theory
TLDR
In this article, a four-electrode system with an axial-radial two-dimensional adjustment structure coupled to an ac voltage excitation source and signal collecting circuit was developed for the absolute measurement of electrolytic conductivity in aqueous solutions.Abstract:
Based on an innovative application of van der Pauw's theory, a system was developed for the absolute measurement of electrolytic conductivity in aqueous solutions. An electrolytic conductivity meter was designed that uses a four-electrode system with an axial–radial two-dimensional adjustment structure coupled to an ac voltage excitation source and signal collecting circuit. The measurement accuracy, resolution and repeatability of the measurement system were examined through a series of experiments. Moreover, the measurement system and a high-precision electrolytic conductivity meter were compared using some actual water samples.read more
Citations
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Journal ArticleDOI
Considerations on electrical impedance measurements of electrolyte solutions in a four-electrode cell
TL;DR: In this article, a tetrapolar probe was used to measure the electrical properties of electrolyte solutions with gold electrodes according to the van der Pauw method, and a simple and rapid method using a three-electrode electrochemical cell was described for cleaning of electrodes, verification of surface chemical state of electrode material and choice of current supplied to electrodes for EIS measurements.
Journal ArticleDOI
A theoretical study on resistance of electrolytic solution: Measurement of electrolytic conductivity
TL;DR: In this paper, the authors propose a theoretical approach to determine the conductivity of electrolytic solution using sine waveform voltage as a triggering signal based on the acquisition of the complex impedance in two-electrode conductance cell by analyzing the equivalent circuit.
Journal ArticleDOI
Bridging the Gap Between Ultrapure Water and Reference Materials in Electrolytic Conductivity Measurements
TL;DR: A closed-flow-loop electrolytic conductivity measurement system enabling calibration of conductivity sensors from the conductivity level of ultrapure water (UPW) up till the range of 10 to 140 mS/m, where stable certified reference materials (CRMs) for conductivity are available.
Journal ArticleDOI
Addressing the challenges of traceable electrolytic conductivity measurements in water
TL;DR: In this paper, the challenges of making accurate and traceable electrolytic conductivity cell constant calibrations and sensor system calibration measurements over a wide range of conductivity, from 5.5 µS m−1 (ultrapure water) up to 140 000 µSm−1, where stable and reliable commercial certified reference materials (CRMs) are available, are discussed and the relationship between the two domains is analyzed in terms of a Gaver-Stehfest algorithm for inverse Laplace transform.
Journal ArticleDOI
Review on Electrolytic Conductivity Sensors
TL;DR: In this paper, the authors present an overview and analysis of electrolytic conductivity (EC) sensors from the lowest to the highest range of conductivities and in applications, where there are strong requirements for accurate and traceability measurements of water and electrolyte solutions.
References
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Book ChapterDOI
A method of measuring specific resistivity and hall effect of discs of arbitrary shape
Journal ArticleDOI
The Measurement of the Conductance of Electrolytes. V. A Redetermination of the Conductance of Standard Potassium Chloride Solutions in Absolute Units
Journal ArticleDOI
Electrical Conductivity of Electrolytes Found In Natural Waters from (5 to 90) °C
TL;DR: The electrical conductivities of 34 electrolyte solutions found in natural waters ranging from (10−4 to 1) mol·kg−1 in concentration and from (5 to 90) °C have been determined.
Journal ArticleDOI
Proposed New Electrolytic Conductivity Primary Standards for KCl Solutions.
Y. C. Wu,W. F. Koch,K W Pratt +2 more
TL;DR: An absolute determination of aqueous electrolytic conductivity has been made for 0.01 molal (m) and 0.1 m potassium cliloride solutions, over the temperature range of 0 to 50 °C in 5 degree intervals, and it is proposed that these values be adopted as primary standards for aqueously electrolytic Conductivity, replacing the demal scale.
Journal ArticleDOI
A new method of calculating electrical conductivity with applications to natural waters
TL;DR: In this article, a new method is presented for calculating the electrical conductivity of natural waters that is accurate over a large range of effective ionic strength (0.0004-0.7 ǫ kg−1), temperature, pH, and conductivity.