Stable liquid membranes for liquid phase microextraction
US7445939B2 · kind B2 · utility
1Cited by
8References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2004 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | Apr 8, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/255
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides devices and methods for performing liquid phase microextraction of at least one analyte from an aqueous sample, wherein the device comprises a liquid membrane comprising a fatty acid ester, a vegetable oil, a silicone oil, a nitroarylalkylether, or mixtures thereof, and an optional carrier, supported on a porous polymeric substrate. In a preferred embodiment, the porous polymeric substrate is a hollow fiber. The devices and methods for preparing them provide stable liquid membranes for performing liquid phase microextraction, where the membranes can be stored for 30, 60 or 90 days prior to use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.