过氧化聚吡咯/十二烷基硫酸钠/单壁碳纳米管基体吸附溶出伏安法同时测定重金属离子

Sensor Letters Pub Date : 2020-11-01 DOI:10.1166/sl.2020.4292

Sarra Slimi, H. Barhoumi, N. Jaffrezic‐Renault

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引用次数: 0

摘要

在这项工作中，我们报道了一种过度氧化的聚吡咯(oPPy)/单壁碳纳米管(SWCNTs)基质，电化学涂覆在玻碳电极(GCE)上。用AFM、FTIR和循环伏安法对该基质进行了表征。研究表明，开发的透选矩阵允许同时定量多种金属离子，包括锌，镉和铅，使用方波阳极溶出伏安法。oPPy/SWCNTs/GCE对Zn2+、Cd2+和Pb2+的灵敏度分别为8.89、41.3和45.4 μA mol L~1。Cd2+和Pb2+的检出限分别为37 μg/L和69 μg/L。此外，所开发的基于oPPy/SWCNTs的传感器已成功用于废水样品中铅和镉的检测。

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Overoxidized Polypyrrole/Sodium Dodecyl Sulfate/Single Wall Carbon Nanotubes Matrix for the Simultaneous Electrochemical Determination of Heavy Metal Ions by Adsorptive Stripping Voltammetry

In this work, we report an overoxidized polypyrrole (oPPy)/single-wall carbon nanotubes (SWCNTs) matrix, electrochemically coated onto a glassy carbon electrode (GCE). This matrix was characterized by AFM, FTIR, and cyclic voltammetry. It is shown that the developed permslective matrix allows the simultaneous quantification of multiple metal ions, including zinc, cadmium, and lead, using square wave anodic stripping voltammetry. The sensitivities of the oPPy/SWCNTs/GCE for Zn2+, Cd2+, and Pb2+ are respectively, 8.89, 41.3, and 45.4 μA mol L~1. The detection limits of Cd2+ and Pb2+ were found to be respectively equal to 37 μg/L and 69 μg/L In addition, the developed oPPy/SWCNTs based sensor has been successfully used for the detection of lead and cadmium in wastewater samples.

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来源期刊

Sensor Letters 工程技术-电化学

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.