Magnetic silver(I) ion-imprinted polymeric nanoparticles on a carbon paste electrode for voltammetric determination of silver(I)
Magnetic silver(I) ion-imprinted polymeric nanoparticles on a carbon paste electrode for voltammetric determination of silver(I)
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DOI：
10.1007/s00604-017-2157-8
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发表时间：
2017-06-01
影响因子：
5.7
通讯作者：
Taher, Mohammad A.
中科院分区：
文献类型：
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作者：
Ghanei-Motlagh, Masoud;Taher, Mohammad A.
制备了磁性银离子印迹聚合物纳米颗粒（mag-IIP-NPs），并将其用作银（I）电化学检测中的识别元件。该过程包括两个步骤：(a) 通过 mag-IIP-NP 提取 Ag(I)，(b) 使用微分脉冲伏安法测定磁碳糊电极 (MCPE) 表面上预浓缩的 Ag(I) 离子。对吸附剂用量、样品溶液pH值、萃取时间、支持电解质、还原电位和还原时间进行了优化。在最佳条件下，工作电压为 +0.02 V（相对于 Ag/AgCl），该方法在 0.05 至 150 mu gai...L-1 Ag(I) 浓度范围内显示出线性响应。其他特性包括低检测限 (15 ngai...L-1)、卓越的选择性和良好的重现性（RSD 为 4.7%）。将分析不同水样时使用该分析测定获得的结果与GF-AAS获得的数据进行比较，结果令人满意。我们认为，这种方法还可以扩展到其他离子的电化学检测，这使其成为广泛适用的重金属离子分析策略。
Magnetic silver ion imprinted polymer nanoparticles (mag-IIP-NPs) were prepared and used as a recognition element in electrochemical detection of silver(I). The procedure involves two steps: (a) the extraction of the Ag(I) by the mag-IIP-NPs, and (b) determination of the preconcentrated Ag(I) ions on the surface of the magneto carbon paste electrode (MCPE) using differential pulse voltammetry. The amount of sorbent, pH value of the sample solution, extraction time, supporting electrolyte, reduction potential and reduction time were optimized. Under optimal conditions and at a working voltage of +0.02 V (vs. Ag/AgCl), the method displays a linear response in the 0.05 to 150 mu gai...L-1 Ag(I) concentration range. Other features include a low detection limit (15 ngai...L-1), a remarkable selectivity and good reproducibility (with an RSD of 4.7%). The results obtained with this analytical assay when analyzing different water samples were compared with the data obtained by GF-AAS, and the results agreed satisfactorily. In our perception, this approach also may be extended to electrochemical detection for other ions, and this makes it a widely applicable strategy for heavy metal ion analysis.