Voltammetric Detection of Captopril Using Copper(II) and an Unmodified Glassy Carbon Electrode

Areias Madalena C. C.; Shimizu Kenichi; Compton Richard G.

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Voltammetric Detection of Captopril Using Copper(II) and an Unmodified Glassy Carbon Electrode

机译：铜（II）和未修饰的玻碳电极伏安法测定卡托普利

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We report a simple, sensitive, and rapid detection of captopril using copper(II) and a bare glassy carbon electrode with cyclic voltammetry. The captopril is detected by the formation of a copper(II)-captopril complex that is observed to have a characteristic oxidation potential at +0.24 V vs. Ag/AgCl. It is found that the peak current varies linearly with the concentration of captopril. The linear dynamic range is obtained for a captopril concentration of 1 mu M to 10 mu M, and the sensitivity is found to be 0.10 +/- 0.003 mu A mu M-1. Importantly, the low limit of detection (n=3) of 0.10 mu M and the precision of 3.2%, are achieved using a simple, unmodified electrode. This is attributable to in situ adsorption of a copper(II)-captopril complex on the electrode surface.

机译：我们报告了使用铜（II）和带有循环伏安法的裸玻碳电极的简单，灵敏和快速的卡托普利检测方法。通过形成铜（II）-卡托普利络合物来检测卡托普利，观察到在相对于Ag / AgCl的+0.24 V处具有特征性氧化电位。发现峰值电流随卡托普利的浓度线性变化。卡托普利浓度为1μM至10μM时，可得到线性动态范围，灵敏度为0.10 +/- 0.003μAμM-1。重要的是，使用简单的未修饰电极即可实现0.10μM的低检测限（n = 3）和3.2％的精确度。这归因于在电极表面上原位吸附铜（II）-卡托普利络合物。

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《Electroanalysis》 |2016年第7期|共6页
作者
Areias Madalena C. C.; Shimizu Kenichi; Compton Richard G.;
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正文语种 eng
中图分类电化学、电解、磁化学;
关键词
Copper(II); captopril; glassy carbon electrode; thiols; cyclic voltammetry;

机译：铜;卡托普利;玻碳电极;硫醇;循环伏安法;

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1. Voltammetric Detection of Captopril Using Copper(II) and an Unmodified Glassy Carbon Electrode [J] . Areias Madalena C. C., Shimizu Kenichi, Compton Richard G. Electroanalysis . 2016,第7期

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Voltammetric Detection of Captopril Using Copper(II) and an Unmodified Glassy Carbon Electrode

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