Chloride ion-selective electrode
US4936975A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1988 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Jul 19, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/3335
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid film type, chloride ion-selective electrode is provided with the present invention, which comprises a sensitive film containing a polymeric material as a support film material, a tetraalkyl ammonium salt with four alkyl group each having 10-24 carbon atoms as a chloride ion-sensitive substance, and a mixture of a linear alcohol having a low dielectric constant with at leastg 10 carbon atoms and an organic compound having a dielectric constant higher than that of said linear alcohol as plasticizer. This electrode has a high selectivity over lipophilic anions and hydrophilic anions, high accuracy ion measurements, and a long life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.