Micro chemical analysis employing flow through detectors
US5444807A · kind A · utility
70Cited by
6References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 1994 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | May 13, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/1062
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The chemical properties of a flowing liquid analyte, the analyte comprising a solvent having an index of refraction which is the same as or closely approaches that of water, are determined by liquid chromatography or capillary electrophoreses wherein the analyte is caused to flow through an optical waveguide. The waveguide is a rigid capillary having a refrctive index of less than 1.33. Measurement light is launched axially into the analyte by inserting an optical fiber, coupled to a light source, into one end of the waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.