Sample pretreatment method of microextraction tube injection
US11287401B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2019 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Jul 3, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/085
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a sample pretreatment method of microextraction tube injection, comprising providing a capillary micro-extraction tube with extracting medium in it as an injector, passing a sample through the capillary micro-extraction tube, during which an analyte is extracted into an extracting medium inside the capillary micro-extraction tube; then, filling the capillary micro-extraction tube with an organic solvent and keeping the filling for a certain period of time, so that the extracted analyte is dissolved in the organic solvent inside the capillary micro-extraction tube to form an injection solution; finally, keeping one end of the capillary micro-extraction tube sealed and inserting the other end directly into an injection port of a gas chromatography, such that the injection solution is automatically ejected out from the capillary micro-extraction tube into the injection port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.