Extraction material comprising treated silica and method for determination of gamma-hydroxybutyrate
US6156431A · kind A · utility
11Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1999 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Jan 4, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2995
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A treated silica composition particularly useful for solid phase extraction in chemical analysis, the silica having both phenyl and propylsulfonic acid functional groups; a cartridge for extraction which comprises the treated silica; a column for extraction which comprises the treated silica; and a method for solid phase extraction which uses the silica composition. A method for analysis of gamma hydroxybutyric acid is also disclosed which uses the treated silica.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.