Chromoionophore and method of determining potassium ions
US7960181B2 · kind B2 · utility
11Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2007 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Oct 21, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N31/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to methods of determining potassium ions in a sample, wherein the ions are contacted with a compound having chromophoric moiety and an ionophoric moiety, where the ionophoric moiety interacts with the potassium ions present in the sample, resulting in the chromophoric moiety changing its radiation absorption properties in the ultraviolet and visible regions of the spectrum. For example, a change in an intensity of an absorption maximum is measured and the ion concentration is determined accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.