Ion selective membranes and the preparation thereof
US12044652B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2019 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Sep 1, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/3335
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Processes for preparing ion selective membranes are presented which have selectivity for a primary analyte (in particular magnesium) as well as another ion (in particular calcium), wherein said process comprises addition of a) an ionophore (in particular 1,10-phenanthroline), b) a lipophilic salt containing said primary analyte (in particular hemi-magnesium bis[4-octylphenyl]phosphate) and c) a lipophilic salt containing said other ion (in particular hemi-calcium bis[4-octylphenyl]phosphate). Also, ion selective membranes are presented which are prepared using said processes, in particular to membranes selective for magnesium ions. In further aspects, electrodes and potentiometric sensors are presented comprising such membranes and the use thereof for determining ion concentrations in samples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.