Method for determining the concentration of electro-chemically c

Details Method for determining the concentration of electro-chemically c Method for determining the concentration of electro-chemically c

1986-12-19

1990-04-24

Nguyen, Nam X.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

204403, 128635, G01N 2752

Patent

active

049197703

ABSTRACT:
The invention involves a method for determining the concentration of electro-chemically convertible substances in a solution by means of an analyzer equipped with a test electrode, so that a precise determination of the concentration, dependable over extended periods, is possible. The invention provides for a potential varying with time within a potential interval to be impressed on the test electrode, for an ac voltage of a predetermined amplitude and frequency to be superimposed on this potential, and for the real and/or imaginary portions of the impedance to be determined for at least one potential step, thus determining the concentration. The method is particularly suited for determining the concentration of glucose in body fluids.

REFERENCES:
patent: 4340458 (1982-07-01), Lerner et al.
patent: 4366033 (1982-12-01), Richter et al.
Bard et al., "Electrochem. Methods Fund. and Appl.", NY, J. Wiley & Son, 1980, Chapter 9, pp. 316-397.

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