Preparation of an Ion Imprinted Fluorescent Sensor for Selectivity Determination of Cadmium in Aqueous Media

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Preparation of an Ion Imprinted Fluorescent Sensor for Selectivity Determination of Cadmium in Aqueous Media

- Preparation of an Ion Imprinted Fluorescent Sensor for Selectivity Determination of Cadmium in Aqueous Media
- Vol. 30, Issue 7, Pages: 795-798(2011)
- 作者机构：
  
  浙江工业大学化学工程与材料学院绿色合成技术国家重点实验室培育基地
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Preparation of an Ion Imprinted Fluorescent Sensor for Selectivity Determination of Cadmium in Aqueous Media. [J]. 30(7):795-798(2011)
DOI：

Preparation of an Ion Imprinted Fluorescent Sensor for Selectivity Determination of Cadmium in Aqueous Media. [J]. 30(7):795-798(2011) DOI：

摘要

该文运用离子印迹技术，结合表面修饰方法以2-萘基丙烯酸酯为荧光配体，聚偏氟乙烯（PVDF）膜为支撑介质，在二甲基亚砜中于65 ℃下热引发聚合得到镉离子荧光印迹传感器。该荧光印迹传感器在中性条件下对镉离子表现出良好的选择性和抗干扰能力，检出限为5.5×10-7 mol/L，与ICP-MS法无显著性差异。循环使用10次的相对标准偏差为2.3%，对实际水样中镉离子的回收率为97%~100%。

Abstract

An optical approach was developed for the detection of Cd2+ based on ion imprinted polymer membrances as sensing receptors.The polymer was synthesized with cadmium ions as a template and 2-naphthyl acrylate as both the fluorescence tag and a complex-forming agent.The free radical polymerization was performed within PVDF films and was initiated by 2,2′-azobisisobutyronitrile at 65 ℃ in dimethyl sulfoxide.The polymer showed a high selectivity for cadmium ions.The calibration curve was linear over the Cd2+ concentration range of 1-9 μmol/L with a detection limit of 5.5×10-7 mol/L.Compared with that by the ICP-MS method，the results by this method had no obvisous difference.The RSDs（n=10） of the polymer for Cd2+ was 2.3%，and the recoveries for Cd2+ in spiked river water were in the range of 97%-100%.

关键词

金属离子印迹表面印迹技术荧光传感器镉离子2-萘基丙烯酸酯

Keywords

metal ion imprinted polymersurface molecular imprinted techniquefluorescence sensorcadmium ion2-naphthyl acrylate

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Related Institution

College of Chemical Engineering and Modern Materials，Shangluo University

Shaanxi Key Laboratory of Tailings Comprehensive Utilization of Resources

College of Material Science and Engineering，Nanjing University of Posts & Telecommunications

School of Chemistry and Chemical Engineering， Yangzhou University

武汉生物工程学院化学与环境工程系

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