High volume sampling front end collection device
US8578796B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 2011 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Mar 8, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N1/44
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for sampling surfaces for the presence of compounds is provided, including a housing having a proximal end adapted to receive it negative pressure gradient and a distal end adapted to contact the surfaces; a heating element spaced from the distal end; a primary filter spaced from the heating element; and a secondary filter spaced from the primary filter, the secondary filter removably received by the housing. Also provided is as method for sampling a surface for the presence of compounds, the method including contacting the surface to dislodge the compounds from the surface; capturing first fractions of the compounds with a primary filter while allowing second fractions of the compounds to pass through the primary filter; heating the primary filter to volatilize the first fractions; capturing the volatized first fractions and the second fractions with a secondary filter; and analyzing the secondary filter to identify the compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.