Voltammetric study of vitamin K3 at interdigitated array microelectrodes

被引：0

作者：

Liu, ZM ^{[1
]}

Li, J ^{[1
]}

You, TY ^{[1
]}

Yang, XR ^{[1
]}

Wang, EK ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Natl Analyt Res Ctr Electrochem & Spect, Electroanalyt Chem Lab, Changchun 130022, Jilin, Peoples R China

来源：

ELECTROANALYSIS | 1999年 / 11卷 / 01期

关键词：

voltammetric study; vitamin K-3; interdigitated array microelectrodes; single mode; dual mode;

D O I：

10.1002/(SICI)1521-4109(199901)11:1<53::AID-ELAN53>3.0.CO;2-O

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Cyclic voltammetry of Vitamin K-3 (V-K3) was measured with Pt disk electrode, platinum interdigitated array (Pt-IDA) and Au-IDA microelectrodes in single and dual modes. The effects of pH, scan rate and collector potential on the current of generator and collector were studied. The collection efficiency of V-K3 at IDA electrodes was measured. The linear ranges for current response as a function of V-K3 concentration were found to he 10 mu M-1 mM (i(g)) and 1 mu M - 1 mM (i(c)) for the generator and collector of the Pt-IDA electrode, respectively. The effects of waiting time, potential difference and pulse electrolysis time in differential pulse voltammetry (DPV) on the peak current of V-K3 were studied to get the optimal condition at 0.1 M Na2HPO4, pH 11.50 and 11.0 for Au-IDA and Pt-IDA, respectively.

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页码：53 / 58

页数：6

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