Method for analyzing ionic species using capillary electrophoresis
US5156724A · kind A · utility
5Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1991 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Jan 17, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/44721
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A technique for separating, identifying and measuring ions in solution by capillary zone electrophoresis is described, which provides improved sensitivity and resolution of anionic and cationic species. The method involves introducing a sample containing the ionic species into a narrow core capillary filled with a carrier electrolyte containing a selected light-absorbing anion or cation to an electrical current in a capillary column causing the ions to elute according to their ionic mobility. Both UV absorbing and UV-transparent ions can be detected and quantitated by UV/Visible photometric monitoring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.