Hollow fiber membrane sample preparation devices
US7468281B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2002 |
| Grant date | Dec 23, 2008 |
| Priority date | — |
| Expiry date | Feb 5, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/255
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Simultaneous sample purification, enrichment and analysis of pharmaceuticals, illicit drugs, pollutants, biotechnological products, synthetic organic reaction products and food/flavor ingredients from complex matrices can be performed using porous hollow fiber or porous-disk liquid-membrane devices. The devices are part of a multi-well (e.g. 96-well) plate. The devices can be used for selective separation and enrichment of complex mixtures containing trace levels of analytes, and can be used in tandem with analytical instruments which routinely handle multiple samples under high throughput screening conditions. A multi-well/multi-vial plate can into state-of-the-art HPLC or GC sampling systems or LC/MS or GC/MS instruments. Samples can be enriched several orders of magnitude and can directly be withdrawn from the fiber and injected into the chromatographic instruments. Alternatively, these enriched samples can be introduced directly into MS, CE or other detection devices. Selective extraction of complex mixtures of analytes can be achieved through variation of acceptor phase chemistry, liquid membrane coating, pore size control of the hollow fibers, nature of the polymer from which…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.