Title:
ION CONCENTRATION MEASUREMENT DEVICE AND MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2023/190105
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an ion concentration measurement device and a measurement method capable of reducing measurement errors, distinguishing a method for selecting an ion-selective electrode which is less likely to be interfered by coexisting ions, and obtaining an ion concentration highly accurately by using the selected ion-selective electrode. The ion concentration measurement device includes two or more kinds of ion-selective electrodes which have mutually different selectivity coefficient ratios for multiple ions and which satisfy expression (1) and expression (2), wherein when the number of the kinds of the multiple ions is defined as n, the two or more kinds of ion-selective electrodes are formed from n kinds of ion-selective electrodes, and n is an integer equal to or greater than 2. In expression (1), Bj represents the j-th ion, and Si is a symbol representing the i-th ion-selective electrode. KSi (B1, Bj) represents the ion selectivity coefficient of the ion-selective electrode Si for the ion Bj based on an ion B1. In expression (2), ||A|| is the absolute value of the determinant of the matrix A.
Inventors:
UMEMOTO SHIORI (JP)
KIKUCHI SHIGETOSHI (JP)
WATANABE SHIN (JP)
KIKUCHI SHIGETOSHI (JP)
WATANABE SHIN (JP)
Application Number:
PCT/JP2023/011705
Publication Date:
October 05, 2023
Filing Date:
March 24, 2023
Export Citation:
Assignee:
TOKUYAMA CORP (JP)
International Classes:
G01N27/416
Foreign References:
| JP2000121595A | 2000-04-28 | |||
| JPH07167818A | 1995-07-04 | |||
| JPH0484750A | 1992-03-18 |
Other References:
GLAZIER, S.A. ; ARNOLD, M.A. ; GLAZIER, J.P.: "Evaluation of an overdetermined system based on multiple ion-selective electrodes of the same type", TALANTA, ELSEVIER, AMSTERDAM, NL, vol. 35, no. 3, 1 March 1988 (1988-03-01), NL , pages 215 - 219, XP026566690, ISSN: 0039-9140, DOI: 10.1016/0039-9140(88)80068-7
OTTO MATTHIAS., THOMAS J. D. R.: "Model studies on multiple channel analysis of free magnesium, calcium, sodium, and potassium at physiological concentration levels with ion-selective electrodes", ANALYTICAL CHEMISTRY, AMERICAN CHEMICAL SOCIETY, US, vol. 57, no. 13, 1 November 1985 (1985-11-01), US , pages 2647 - 2651, XP093097098, ISSN: 0003-2700, DOI: 10.1021/ac00290a049
OTTO MATTHIAS., THOMAS J. D. R.: "Model studies on multiple channel analysis of free magnesium, calcium, sodium, and potassium at physiological concentration levels with ion-selective electrodes", ANALYTICAL CHEMISTRY, AMERICAN CHEMICAL SOCIETY, US, vol. 57, no. 13, 1 November 1985 (1985-11-01), US , pages 2647 - 2651, XP093097098, ISSN: 0003-2700, DOI: 10.1021/ac00290a049
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
Download PDF: