Microextraction capsules and method of making
US10352833B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2015 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Jul 22, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L3/508
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A microextraction capsule holding a sol-gel coating or monolithic bed with an affinity for one or more target analytes infused in a porous tube that can be placed in a sample matrix containing the target analytes. The microextraction capsule can include a magnetic wire to allow the capsule to be spun in the presence of the matrix to increase the rate of absorption of the target analytes. The microextraction capsule can be formed by infusing a sol solution into the porous tube and forming a metal oxide or hybrid inorganic-organic sorbent comprising gel from the sol within the pores of the porous tube or by forming a gel by sol-gel condensation with water followed by grinding the gel to a particulate gel and infusing the particles into a porous tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.