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首页> 外文期刊>Sensors and Actuators >Anodic stripping voltammetric measurement of trace cadmium at antimony film modified sodium montmorillonite doped carbon paste electrode
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Anodic stripping voltammetric measurement of trace cadmium at antimony film modified sodium montmorillonite doped carbon paste electrode

机译：锑膜修饰的蒙脱土掺杂碳糊电极阳极溶出伏安法测定痕量镉。

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摘要

In this work, a simple and reliable electrochemical method for the determination of cadmium using an antimony film modified sodium montmorillonite (NaMM) doped carbon paste electrode (Sb/NaMM-CPE) was described. Due to the strong cation exchange ability and adsorptive characteristics of NaMM and excellent electroanalytical performance of the antimony film, the new electrode significantly enhanced the sensitivity for detection of Cd(Ⅱ) and exhibited superior performance in comparison with the bare carbon paste electrode, antimony film modified carbon paste electrode (Sb/CPE), and NaMM modified carbon paste electrode (NaMM-CPE). Some parameters such as the composition of the paste, pH of the measure solution, the Sb(Ⅲ) concentration, deposition time, and deposition potential that influenced the response of cadmium were investigated and the procedure was optimized for cadmium determination. This electrode, combined with square-wave anodic stripping voltammetry, displayed excellent linear behavior in the examined concentration range of 4.0-150.0 μg L~(-1) Cd(Ⅱ) (R~2 = 0.998) with a detection limit of 0.25 μg L~(-1). The Sb/NaMM-CPE was successfully applied to the determination of cadmium ion in tap water sample.
机译：在这项工作中，描述了一种使用锑膜修饰的钠蒙脱土（NaMM）掺杂碳糊电极（Sb / NaMM-CPE）测定镉的简单而可靠的电化学方法。由于NaMM具有强的阳离子交换能力和吸附特性，且锑膜具有优异的电分析性能，因此与裸碳糊电极，锑膜相比，该新型电极显着提高了对Cd（Ⅱ）的检测灵敏度，并具有优越的性能。改性碳糊电极（Sb / CPE）和NaMM改性碳糊电极（NaMM-CPE）。研究了糊的组成，测量溶液的pH，Sb（Ⅲ）浓度，沉积时间和沉积电位等影响镉响应的参数，并优化了测定镉的程序。该电极与方波阳极溶出伏安法相结合，在所检测的浓度范围为4.0-150.0μgL〜（-1）Cd（Ⅱ）（R〜2 = 0.998）且检测限为0.25μg时，表现出优异的线性行为。 L〜（-1）。 Sb / NaMM-CPE成功地用于自来水样品中镉离子的测定。

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  • 来源
    《Sensors and Actuators》 |2016年第12期|570-574|共5页
  • 作者

    Guo Chen; Xia Hao; Bang Lin Li; Hong Qun Luo; Nian Bing Li;

  • 作者单位

    Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China;

    Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China;

    Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China;

    Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China;

    Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Antimony film electrode; Carbon paste electrode; Sodium montmorillonite; Square wave anodic stripping voltammetry; Determination of Cd(Ⅱ);

    机译：锑膜电极;碳糊电极;蒙脱石钠;方波阳极溶出伏安法;镉的测定;

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