Electrochemical detector
US5100530A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1990 |
| Grant date | Mar 31, 1992 |
| Priority date | — |
| Expiry date | Aug 16, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4163
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrochemical detector comprising an electrochemical cell (11), a working electrode (1), an auxiliary electrode (2), a reference electrode (3), a potentiostat (4), and a circuit (7,8) for deriving a signal indicative of the current developed at the working electrode additionally comprises means for monitoring and determining the potential of the reference electrode (3). These means comprise an electrometer circuit (9) which can be connected via a switch (S2) to the auxiliary electrode (2) to measure the potential of the reference electrode. During the measurement, the working electrode (1) is disconnected from the circuit (7,8) which is at the same time connected to the electrometer circuit (9) via switch (S1). The invention permits to recognize measuring errors associated with instabilities in the reference electrode potential (FIG. 1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.