Method and apparatus for the electrochemical determination of ox

Details Method and apparatus for the electrochemical determination of ox Method and apparatus for the electrochemical determination of ox

1988-04-26

1989-08-01

Tung, T.

Chemistry: electrical and wave energy

Processes and products

204402, 204403, 204412, 204431, 128637, 128639, 128642, G01N 2746

Patent

active

048530913

ABSTRACT:
The electrochemical determination of the oxygen concentration, particularly in biological matter, is possible by means of an oxygen sensor with a measuring electrode and a counter electrode over long periods of time, even if the sensor is implanted, by taking the following measures; two potentials are cyclically impressed on the measuring electrode, with one potential (measuring potential) in the range -1.4 V.ltoreq..rho.Ag/AgCl.ltoreq.-0.4 V, and the other potential (recovery potential) in the range -0.2 V.ltoreq..rho.Ag/AgCl.ltoreq.+0.2 V; the dwelling time at the measuring potential is small as compared to the duration of the cycle; and the current flowing during the measuring period is evaluated as the measuring signal.

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Medical and Biological Applications of Electrochemical Devices, "Polarographic Determination of Oxygen in Biological Materials", Kreuzer, Kimmich, and Brezina, 1980, Chapter 6, pp. 174-217.

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