Sulfate detection with barium
US11408867B2 · kind B2 · utility
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1References
10Claims
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Key dates
| Filing date | Aug 1, 2019 |
| Grant date | Aug 9, 2022 |
| Priority date | — |
| Expiry date | Oct 24, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N31/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An embodiment provides a method for measuring sulfate in an aqueous sample, including: introducing an aqueous sample containing an amount of sulfate to a barium dye complex, thereby creating a solution; adding a clarifying agent to the solution, thereby causing the solution to be clarified; and measuring the amount of sulfate in the aqueous sample by measuring a change in color of the solution, the change in color caused by the barium dye complex mixing with the sulfate. Other aspects are described and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.