Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/34784
標題: Electrochemical investigation of glucose sensor fabricated at copper-plated screen-printed carbon electrodes
作者: Kumar, A.S.
曾志明
Zen, J.M.
關鍵字: copper
screen-printed electrode
glucose
sensor
mixed potential measurements
flow-injection analysis
hydrogen-peroxide
glassy-carbon
corrosion mechanisms
adsorption
behavior
platinum-electrode
oxidase enzyme
clay coatings
film
期刊/報告no:: Electroanalysis, Volume 14, Issue 10, Page(s) 671-678.
摘要: Copper-plated screen-printed carbon electrode (CuSPE) provides a suitable catalytic surface for the amperometric detection of hydrogen peroxide, Glucose oxidase (GOD) is immobilized on the top of the CuSPF to form a glucose sensor. The interaction of copper oxide with GOD was found to be an important factor in the glucose detection. Preliminary investigation under hydrodynamic conditions showed a linear calibration plot up to 26.7 mM glucose with a slope and regression coefficient of 4.5 muA/mM and 0.9902. respectively. The Michaelis-Menten kinetics by nonlinear curve fitting yielded a K-m value close to that in solution indicating the ideality and suitability of the present system. Classical mixed potential mechanism is for the first time applied to the enzyme-coated CuSPE to further understand the system.
URI: http://hdl.handle.net/11455/34784
ISSN: 1040-0397
文章連結: 2-o
http://dx.doi.org/10.1002/1521-4109(200205)14:10<671::aid-elan671>3.0.co
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