Assay method for the determination of lithium with novel substituted crown dyes
US5344782A · kind A · utility
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8References
1Claims
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Key dates
| Filing date | Mar 4, 1993 |
| Grant date | Sep 6, 1994 |
| Priority date | — |
| Expiry date | Mar 4, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/108331
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Assay methods are provided for determining the presence of lithium in high sodium content liquids such as serum, plasma, urine or other sample without deproteinization. The novel compounds are water soluble derivatives of TMC-crownformazans and provide signal enhancement by increased absorbance of the dye-lithium complex over the dye anion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.