Method and apparatus for in-situ detection and determination of soil contaminants
US5246862A · kind A · utility
43Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1993 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Mar 24, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reagent carrying tape is captured between the soil and the outer wall of penetrometer. As the penetrometer moves with respect to the soil, the tape is pressed against an optical window in the penetrometer. Contaminants in the soil reacting with the reagents cause an optically sensible reaction in the tape to occur which is optically detected at the optical port as the penetrometer moves with respect to the tape and the soil sample. The optically sensible reaction occurring in the tape is optically isolated from the masking effects of the soil. A method is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.