Method for determination of polymer concentration in water systems
US8178353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2007 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Jan 28, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/1826
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In one aspect, the invention is directed to a method for determining the concentration of anionic polymers or oligomers in industrial water comprising combining a buffer solution and a cationic dye solution, measuring absorbance of the buffer-dye admixture at selected wavelength(s) and determining the polymer or oligomer concentration from the previously determined absorbance values. In alternate embodiments of the invention, the buffer solution may be a multifunctional buffer solution and may be comprised of multiple buffers, masking agents. and/or stabilizing agents and combinations thereof. Other embodiments provide that multiple dyes may be employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.