基于磁传感器预先捕获的磁性分子印迹聚合物颗粒的电化学传感。
Electrochemical sensing using magnetic molecularly imprinted polymer particles previously captured by a magneto-sensor.
机构信息
Laboratory of Physical Chemistry Research, Faculty of Sciences, National University of Engineering, Lima, Peru; Department of Analytical Chemistry, Institute of Chemistry, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil; National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Araraquara, SP, Brazil.
Department of Analytical Chemistry, Institute of Chemistry, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil; National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Araraquara, SP, Brazil.
出版信息
Talanta. 2018 May 1;181:19-23. doi: 10.1016/j.talanta.2017.12.085. Epub 2017 Dec 28.
The determination of 1-chloro-2,4-dinitrobenzene (CDNB) was used as a proof-of-concept to a simple analytical practical configuration applying magnetic molecularly imprinted particles (mag-MIPs). Mag-MIPs were captured from an emulsion by a home-made magneto-sensor (where a small magnet was entrapped by a graphite-epoxy composite) and then, this sensor, was transferred to the solution containing the analyte, where, after binding to the mag-MIPs, the analyte was directly analysed using differential pulse voltammetry (DPV) since the magneto-sensor acted as the working electrode. After optimization, a detection limit of 6.0 μmol L with a RSD of 2.7% was achieved along with suitable recoveries and selectivity. This methodology offers a different approach for electroanalytical methodologies using mag-MIPs.
采用 1-氯-2,4-二硝基苯（CDNB）的测定作为一种概念验证，应用于一种简单的分析实用配置，采用磁性分子印迹颗粒（mag-MIPs）。Mag-MIPs 通过自制的磁传感器（其中一个小磁铁被石墨-环氧树脂复合材料困住）从乳液中捕获，然后将该传感器转移到含有分析物的溶液中，在与 mag-MIPs 结合后，直接使用差分脉冲伏安法（DPV）分析分析物，因为磁传感器充当工作电极。经过优化，该方法的检测限为 6.0 μmol L，相对标准偏差为 2.7%，同时具有适当的回收率和选择性。该方法为使用 mag-MIPs 的电分析方法提供了一种不同的方法。
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