Electrokinetic packing of capillary columns
US5453163A · kind A · utility
56Cited by
3References
12Claims
0Family size
Inventor
Key dates
| Filing date | Oct 29, 1993 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Oct 29, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/565
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Capillary columns are packed using electroosmotic flow (EOF) induced by an electrical double layer on the internal wall of a fused silica capillary and the electrophoretic mobility of positively-charged or negatively-charged particles of packing material. Electrokinetic packing is also applicable to uncharged packing particles. With this electrokinetic method several capillaries can be packed simultaneously. Electrokinetically packed capillary columns are useful for the separation of test mixtures and of pharmaceuticals in both electrochromatography and micro-HPLC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.