Liquid film type, anion-selective electrode
US4519891A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1984 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Jan 27, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/3335
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid film type, anion-selective electrode of the present invention is suitable for measuring a chloride ion concentration of blood. A sensitive film contains a plurality of plasticizers having different dielectric constants, an anion-sensitive substance and a polymeric support material for supporting them. An appropriate content of o-nitrophenyloctylether having a high dielectric constant is 5-30% by weight, an appropriate content of n-tetradecyl alcohol having a low dielectric constant 5-40% by weight, and an appropriate content of dimethyldioctadecylammonium chloride as the anion-sensitive substance is 5-30% by weight. An electrode for measuring anions with such a sensitive film has less adverse affect by protein on measurements. The sensitive film further containing n-dodecyl alcohol has a much smaller error of measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.