Conductive polymer film doped by mixed heteropolyanions usable for the detection of nitrite ions, nitrogen monoxide or a substance containing NO
US5605617A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1994 |
| Grant date | Feb 25, 1997 |
| Priority date | — |
| Expiry date | Nov 23, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4166
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to the amperometric detection of nitrite ions and nitrogen monoxide by electrocatalytic reduction by means of electrodes (15) modified by an electronically conductive polymer film such as poly-(N-methyl pyrrole) doped by mixed heteropolyanions of formulas: EQU [M.sup.III X.sup.1 W.sub.11 O.sub.39 (H.sub.2 O)].sup.n- or EQU [M.sup.III X.sub.2.sup.2 W.sub.17 O.sub.61 (H.sub.2 O)].sup.7- in which M represents Fe, Rh, Al, Ga, In or Tl, PA1 X.sup.1 represents P or As and n is equal to 4, PA1 X.sup.1 represents Si or Ge and n is equal to 5, or PA1 X.sup.1 represents B and n is equal to 6, and PA1 X.sup.2 represents P or As. It also relates to the films and modified electrodes used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.