Apparatus and method for determining analyte content in a fluid
US8613214B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2010 |
| Grant date | Dec 24, 2013 |
| Priority date | — |
| Expiry date | Jun 18, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/3595
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method to determine analytes in a fluid. One aspect of the present invention is for the determination of the oil content of water using UV, near-IR, IR or Raman spectroscopy or radiometry. In certain embodiments, a solid membrane material absorbs analytes from fluid brought into contact with it. The membrane is subsequently placed in a FTIR spectrometer, which spectrometer is enabled to determine the concentration of analytes in fluid by calibration. Certain embodiments can determine the type of hydrocarbon present, and thus can differentiate Total Petroleum Hydrocarbons (TPH) from Total Oil and Grease (TOG), without any separate sample preparation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.