Hydrophilic activated sorbent extraction disk
US9260362B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2013 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Dec 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/528
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A one-piece solid phase extraction article to be used in solid phase extraction analysis, a filtration funnel comprising the one piece solid phase extraction article, and a method of use of the article. The article, device and method provide for improved analysis of hexane extractable material by eliminating the standard use of polar solvents to pre-condition the sorbent materials. The one-piece solid phase extraction article comprises water wettable monomeric phase type sorptive material embedded within a porous matrix. The water wettable monolithic polymeric sorptive material may be a hydrophilic polymeric gel, such as functionalized C-18 sorbent material, and the porous matrix may be fibrous matric, such as a glass fiber. The one-piece solid phase extraction article may further comprise one or more pre-filtration layers which do not contain the sorptive particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.