Chemistry: electrical and wave energy – Processes and products
Patent
1983-07-20
1984-10-16
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
128635, 204402, G01N 2752
Patent
active
044773145
ABSTRACT:
A method for determining the concentration of sugar in the presence of interfering foreign substances, by means of a test electrode with a membrane placed in front of it, the electrode being contained in an electrocatalytic sugar sensor, whereby the test electrode is set potentiostatically to a reactivation potential and to a test potential and the current flowing during the set test period is evaluated as a test signal. The invention formulates a method such that with varying concentrations of urea a sensitive determination of sugar concentration which is reliable over a long term is achieved. The invention discloses the method which includes the step that after the reactivation potential and prior to the test potential a third potential that is more negative than the test potential is applied to the test electrode. The technique proposed in the invention is particularly appropriate for the determination of the concentration of glucose in body fluids.
REFERENCES:
patent: 3920969 (1975-11-01), Berglas
patent: 4105522 (1978-08-01), Friedenberg et al.
patent: 4127448 (1978-11-01), Schick et al.
patent: 4340458 (1982-07-01), Lerner et al.
patent: 4366033 (1982-12-01), Richter et al.
"Transactions of American Society Artif. Int. Organs," vol. XIX, 1973, pp. 352-360.
"Biomed Technik", 22 (1977), Supplement Volume, pp. 399-400.
Gebhardt Ulrich
Luft Gunter
Richter Gerhard
Kaplan G. L.
Milde Jr. Karl F.
Nguyen Nam X.
Siemens Aktiengesellschaft
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