Detector for liquid chromatography
US9541531B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2014 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Jun 11, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N30/8641
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A detector for liquid chromatography has light sources that generate light in an ultraviolet region and in a near-infrared region; a flow cell, through which sample liquid flows; an optical system to let light generated from the light sources become incident on the flow cell concurrently; a detection element that detects light in the ultraviolet region that passes through the flow cell; a detection element that detects light in the near-infrared region that passes through the flow cell; and an arithmetic operation part that performs arithmetic operation of a first signal value obtained from the detection element and of a second signal value obtained from the detection element. The arithmetic operation part combines the first signal value and the second signal value to calculate a signal value with a reduced baseline fluctuation resulting from a mobile phase during a gradient analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.