A Novel Electrochemical Method for Protionamide Determination Based on Its Interaction with Alizarin Red S

IF 2.3 Q3 ELECTROCHEMISTRY International journal of electrochemistry Pub Date : 2015-08-20 DOI:10.1155/2015/151390

Weili Zhang, Xueliang Niu, Hua Zhang, Qingqing Jiang, Pingping Zhang

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引用次数: 1

Abstract

The interaction of protionamide with alizarin red S (ARS) and its analytical application were carefully investigated in this contribution. The interaction conditions were carefully studied and optimized by cyclic voltammetry. Under the optimum conditions, the cyclic voltammetry curve of ARS showed an oxidation peak with the peak potential of 0.57 V. After the addition of protionamide to the ARS solution, the peak potential was negatively moved, and meanwhile the oxidation peak current decreased apparently to the concentration of protionamide and then a new method for the protionamide determination was established. The linear equation between the decreasing current (Δip) and protionamide concentration was got as Δip (μA) = 0.01514 (mg/L) −0.01553 with the linear range of 10.0~50.0 mg/L, and the detection limit () was got as 8.25 μg/mL. The effects of coexisting substances on the determination were carefully investigated and the protionamide artificial and tablet samples were detected with satisfactory results.

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基于与茜素红S相互作用的新型测定丙硫酰胺的电化学方法

本文研究了丙硫胺与茜素红S (ARS)的相互作用及其分析应用。采用循环伏安法对相互作用条件进行了研究和优化。在最优条件下，ARS循环伏安曲线出现氧化峰，峰电位为0.57 V。在ARS溶液中加入protionamide后，峰电位发生负移动，氧化峰电流随protionamide浓度的增加而明显减小，从而建立了一种新的测定protionamide的方法。在10.0~50.0 mg/L的线性范围内，得到降低电流(Δip)与丙硫酰胺浓度的线性关系为Δip (μA) = 0.01514 (mg/L) ~ 0.01553，检出限()为8.25 μg/mL。研究了共存物质对含量测定的影响，并对丙硫酰胺人工样品和片剂样品进行了检测，结果令人满意。

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International journal of electrochemistry ELECTROCHEMISTRY-

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7 weeks