Solid phase extraction medium
USRE36811E · kind E · reissue
9Cited by
15References
46Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 24, 1994 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | Oct 24, 2014 |
Classification
- Technology area (CPC —)General
Abstract
A method for isolating an environmentally hazardous organic contaminant from a fluid utilizes a solid phase extraction medium comprises a PTFE fibril matrix, and sorptive particles enmeshed in said matrix comprising more than 30 and up to 100 weight percent of porous organic particles, and less than 70 to 0 weight percent of porous (organic-coated or uncoated) inorganic particles, the ratio of sorptive particles to PTFE being in the range of 40:1 to 1:4 by weight. The extraction medium is useful in pesticide, phenolics, and residue of explosives separations. The separations can be efficiently performed in a stacked disk format.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.