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首页> 外文期刊>International Journal of Electrochemical Science >Signal Enhancement of Hydroquinone and Catechol on Their Simultaneous Determination
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Signal Enhancement of Hydroquinone and Catechol on Their Simultaneous Determination

机译：同时测定对苯二酚和邻苯二酚的信号增强

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摘要

An activated glassy carbon electrode (GCE), prepared by applying a constant oxidation potential, can simultaneously determine hydroquinone (HQ) and catechol (CC). Here, we report on the modification of the electrochemical activation process of the GCE by applying a constant reduction potential preceded by the application of constant oxidation potential. The GCE activated through two-step electrochemical activation enhanced peak currents of HQ and CC compared to that activated only at a constant oxidation potential. The redox responses from the mixture of HQ and CC were easily resolved at the improved activated GCE. The peak potential separation of 110 mV was large enough for the simultaneous determination of HQ and CC. The oxidation peak currents of HQ and CC were linear over the range from 1 to 200 μM with the detection limits (S/N= 3) of 37 and 26 nM, respectively.
机译：通过施加恒定的氧化电位制备的活性玻碳电极（GCE）可以同时测定氢醌（HQ）和邻苯二酚（CC）。在这里，我们报告通过施加恒定的还原电位，再施加恒定的氧化电位，对GCE的电化学活化过程进行的修饰。与仅在恒定氧化电位下激活的GCE相比，通过两步电化学激活激活的GCE增强了HQ和CC的峰值电流。 HQ和CC混合物的氧化还原反应在改进的活化GCE上很容易解决。 110 mV的峰电位隔离足够大，可以同时测定HQ和CC。 HQ和CC的氧化峰电流在1至200μM范围内呈线性，检测极限（S / N = 3）分别为37和26 nM。

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