Method for detecting and measuring low concentrations of contaminants using attenuated total reflectance spectroscopy in the mid-IR range
US8735822B2 · kind B2 · utility
3Cited by
1References
16Claims
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Key dates
| Filing date | Aug 12, 2011 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Oct 22, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/552
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spectroscopic method is disclosed for detecting and measuring contaminants in fluids such as water or oil, where the hydrophilicity of the contaminant is substantially different from that of the contaminated fluid. Good calibrations can be obtained at very low concentrations using infrared spectroscopy with ATR crystals that have not been additionally coated or otherwise modified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.