科研之友
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摘要
A novel electrochemically treated ZrOCl2 doped carbon paste composite electrode was easily prepared by directly incorporating ZrOCl2 into graphite powder after with an electrochemical treatment for the first time. This sensor showed sensitive voltammetric sensing for daidzein. The surface morphology and electrochemical properties of the electrode were investigated by scanning electron microscopy and cyclic voltammetry. The electrochemical behavior of daidzein was investigated in detail. Under the optimized conditions, the response currents were linearly related to daidzein concentrations in the range of 3x10(-8) to 2x10(-6)molL(-1) with a detection limit of 1x10(-8)molL(-1) in phosphate buffer solution with pH 2.5. The proposed sensor was also applied to the determination of daidzein in pueraria, pharmaceutical preparations and human uric sample with satisfactory results.
- 出版日期2015-7
- 单位郑州大学; 河南城建学院
