Novel screen-printed antimony and tin voltammetric sensors for anodic stripping detection of Pb(II) and Cd(II)
Novel screen-printed antimony and tin voltammetric sensors for anodic stripping detection of Pb(II) and Cd(II)
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DOI：
10.1016/j.electacta.2013.10.075
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发表时间：
2013-12-30
影响因子：
6.6
通讯作者：
Prodromidis, Mamas I.
中科院分区：
文献类型：
--
作者：
Maczuga, Mariola;Economou, Anastasios;Prodromidis, Mamas I.
在这篇文章中，一些新型的电镀和修饰的丝网印刷锑和锡电极的开发和评估的同时阳极溶出伏安法（ASV）检测铅（II）和镉（II）。用循环伏安法对电极进行了表征，并对不同的仪器和化学参数进行了研究。新传感器的全面比较进行了对基准的电镀和电火花改性丝网印刷铋电极。的检测限范围为0.9至1.2 μ g L-1的铅（II）和1.8至3.5 μ g L-1的镉（II）为240秒的沉积。在20 μ g L-1水平下，相同传感器的重复性（表示为%相对标准偏差，（n=8））始终低于5.7%和8.3%的电镀和修饰电极，分别。应用新的传感器的矿泉水样品加标镉（II）和铅（II）的回收率在95%至103%的范围内。(C)2013爱思唯尔有限公司版权所有。
In this article, some new types of electroplated and precursor-modified screen-printed antimony and tin electrodes were developed and assessed for the simultaneous anodic stripping voltammetric (ASV) detection of Pb(II) and Cd(II). The electrodes were characterized by cyclic voltammetry and the different instrumental and chemical parameters were investigated. A comprehensive comparison of the new sensors was performed against the benchmark electroplated and precursor-modified screen-printed bismuth electrodes. The limits of detection were in the range 0.9 to 1.2 mu g L-1 for Pb(II) and 1.8 to 3.5 mu g L-1 for Cd(II) for 240 s deposition. The repeatability on the same sensor (expressed as % relative standard deviation, (n=8)) at the 20 mu g L-1 level was always lower than 5.7% and 8.3% for the electroplated and the precursor-modified electrodes, respectively. Application of the new sensors to mineral water samples spiked with Cd(II) and Pb(II) produced % recovery values in the range 95% to 103%. (C) 2013 Elsevier Ltd. All rights reserved.