Title:
ELECTROLYTE CONCENTRATION MEASURING DEVICE AND METHOD FOR OBTAINING SELECTIVITY COEFFICIENT
Document Type and Number:
WIPO Patent Application WO/2023/157421
Kind Code:
A1
Abstract:
The present invention makes it possible to obtain a value corresponding to the selectivity coefficient of interfering ions or the concentration of the interfering ions without the need for a dedicated sample for calculating the selectivity coefficient of the interfering ions. Provided is an electrolyte concentration measuring device 100 for measuring the ion concentration of analyte ions contained in a liquid. The electrolyte concentration measuring device 100 comprises: ion-selective electrodes 111 to 113 to which the liquid is supplied; a comparative electrode 116 that provides a potential reference; and a control unit 120 that outputs the ion concentration of the analyte ions on the basis of the electromotive force between the comparative electrode 116 and the ion-selective electrodes 111 to 113. The control unit 120 inputs a measured potential of a solution containing the analyte ions and interfering ions, which affect the measurement of the concentration of the analyte ions, to a trained model, which outputs a value corresponding to the selectivity coefficient of the interfering ions or the concentration of the interfering ions on the basis of a measured potential of the solution containing the analyte ions and the interfering ions, and thus obtains a value corresponding to the selectivity coefficient of the interfering ions or the concentration of the interfering ions from the trained model.
Inventors:
YAMASHITA KOTARO (JP)
Application Number:
PCT/JP2022/043871
Publication Date:
August 24, 2023
Filing Date:
November 29, 2022
Export Citation:
Assignee:
HITACHI HIGH TECH CORP (JP)
International Classes:
G01N27/26; G01N27/416
Domestic Patent References:
| WO2019163281A1 | 2019-08-29 |
Foreign References:
| JPH07253409A | 1995-10-03 | |||
| US20130304395A1 | 2013-11-14 | |||
| JPS61259156A | 1986-11-17 | |||
| JP2004219352A | 2004-08-05 | |||
| JP2004163349A | 2004-06-10 | |||
| US20180246055A1 | 2018-08-30 |
Other References:
SHAMSIPUR, M ET AL.: "Application of artificial neural network to simultaneous potentiometric determination of silver(I), mercury(II) and copper(II) ions by an unmodified carbon paste electrode", TALANTA, vol. 64, no. 3, 2004, pages 590 - 596, XP004571137, ISSN: 1873-3573, DOI: 10.1016/j.talanta.2004.03.034
Attorney, Agent or Firm:
HIRAKI & ASSOCIATES (JP)
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