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dc.contributor.authorLucadou, I. v.
dc.contributor.authorPreidel, W.
dc.contributor.authorRao, J. R.
dc.date.accessioned2023-08-30T09:51:19Z
dc.date.available2023-08-30T09:51:19Z
dc.date.issued1987
dc.date.submitted2023-08-30
dc.identifier.citationBiosensors International Workshop 1987, 269 - 270en_US
dc.identifier.isbn0-89573-683-7
dc.identifier.isbn3-527-26801-4
dc.identifier.issn0930-4320
dc.identifier.urihttp://hdl.handle.net/10033/623440
dc.description.abstractAn enzymatic glucose sensor using glucose oxidase (1) and especially an electrocatalytic sensor oxidizing glucose directly (2) are under investigation for the intracorporal measurement of glucose. Both are based on electrochemical principle. Though we have mainly pursued the latter one, both systems will be compared by presenting some experimental results. The enzymatic sensor was designed in a simple way: Pt-electrode/glucose oxidase solution/membrane. This sensor is featured by the residual current due to direct oxidation of glucose at the electrode, the effect of H20.2 which results as a product of enzymatic oxidation of glucose and the presence or absence of oxygen during the glucose measurement. In the electrocatalytic sensor, the membrane covered Pt-electrode is subjected to a potential-jump in cycle between a working and a rejuvenating potential. Either the charge derived at the working potential or the impedance obtained at two different frequencies for various potential steps is a measure for the glucose concentration. Its performance is mainly determined by the electrode poisoning and the membrane properties. However, these conditions can be optimized and, as will be shown, glucose still be measured in saline solutions, serum and blood. The electrocatalytic sensor is promising because of its long term stability though its selectivity poses a problem. It is just the opposite in enzyme sensor since the enzyme is not stable over longer periods.en_US
dc.language.isoenen_US
dc.publisherGBF - Gesellschaft für Biotechnologische Forschungen_US
dc.relation.ispartofseriesGBF Monographs, Volume 10en_US
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/*
dc.titleGLUCOSE SENSOR: COMPARISON OF ENZYMATIC AND ELECTROCATALYTIC PRINCIPLESen_US
dc.typeBook chapteren_US
dc.typeconference paperen_US
dc.contributor.departmentResearch and Development Laboratories, Siemens AG Paul-Gossen-Str. 100, D-8520 Erlangen, FRGen_US
dc.identifier.journalBiosensors International Workshop 1987en_US
refterms.dateFOA2023-08-30T09:51:20Z


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Attribution-NonCommercial-ShareAlike 4.0 International
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