Method of measuring the concentration of ions in solution
First Claim
1. A method of measuring the concentration of ions in a solution, comprising applying an a.c. signal across an ion-sensitive material immersed in the solution and measuring one of the real and imaginary components of the impedance of the ion-sensitive material separately from the other of said components.
0 Assignments
0 Petitions
Accused Products
Abstract
A method of measuring the concentration of ions in a solution, for example the concentration of solvated H+ ions i.e. the pH, comprises applying an a. c. signal across an ion-sensitive material immersed in the solution and measuring the complex impedance of the ion-sensitive material at a frequency at which the out-of-phase component of the impedance is sensitive to changes in pH. A probe for use in the method comprises two metal electrodes encased in pH sensitive glass, or two electrodes coated independently with ion-sensitive glass, then fritted together.
-
Citations
8 Claims
- 1. A method of measuring the concentration of ions in a solution, comprising applying an a.c. signal across an ion-sensitive material immersed in the solution and measuring one of the real and imaginary components of the impedance of the ion-sensitive material separately from the other of said components.
Specification