Offline solid phase microextraction sampling system
US7464614B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 2006 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | May 20, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/009
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An offline solid phase microextraction (SPME) sampling apparatus for enabling SPME samples to be taken a number of times from a previously collected fluid sample (e.g. sample atmosphere) stored in a fused silica lined bottle which keeps volatile organics in the fluid sample stable for weeks at a time. The offline SPME sampling apparatus has a hollow body surrounding a sampling chamber, with multiple ports through which a portion of a previously collected fluid sample may be (a) released into the sampling chamber, (b) SPME sampled to collect analytes for subsequent GC analysis, and (c) flushed/purged using a fluidically connected vacuum source and purging fluid source to prepare the sampling chamber for additional SPME samplings of the same original fluid sample, such as may have been collected in situ from a headspace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.