Method of measuring hydroquinone levels in boiler feedwaters using electrochemistry
US5104809A · kind A · utility
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1References
7Claims
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Key dates
| Filing date | Feb 6, 1991 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Feb 6, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/145555
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved method of electroanalytical detection of residual hydroquinone in boiler feedwater employing adding an ionic base and a copper chelant to the feedwater sample. Na.sub.3 PO.sub.4 and ethylenediamine are representative chemicals when square wave voltammetry (SWV) is used as the electroanalytical technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.