基于离子印迹与识别的重金属离子荧光光纤传感器的研究

项目名称： 基于离子印迹与识别的重金属离子荧光光纤传感器的研究

项目编号： No.21477026

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 化学工业

项目作者： 孙慧

作者单位： 广州大学

项目金额： 86万元

中文摘要： 基于环境水体中重金属离子(HMIs)污染日趋严重的问题，本研究拟结合离子印迹技术、荧光探针技术和光纤技术建立环境水体中HMIs的原位监测或远程监控方法。首先通过模拟计算，设计、筛选和合成对HMIs同时具有离子识别能力、荧光开关功能和高灵敏度响应的新型荧光多功能单体(FMFM)；藉此FMFM，直接在光纤探头上制备对HMIs具有选择性识别能力的离子印迹荧光膜；并以该印迹膜修饰的光纤探头为传感器的敏感元件，进一步设计和构建离子印迹荧光光纤传感器系统(IIFOS)，并将其应用于环境水中HMIs的原位监测和远程监控。此系统不但兼具有离子印迹聚合物的高选择性、耐用性和荧光探针的高灵敏性，而且还利用了光纤对光良好的传导性，可将IIFOS的光纤探头直接伸入到环境水中任何部位进行检测，因而有望布局于各个污染源进行HMIs的原位监测和远程监控，这对于水污染控制和预警有着非常重大的意义。

中文关键词： 重金属离子；环境分析；分析方法；样品前处理技术；环境污染物

英文摘要： Due to the serious contamination problem of heavy metal ions (HMIs) in environmental water, a novel method which integrates ion-imprinting technology, flourescent probe technology and optic fiber technology will be developped in the proposed study for determining or monitoring the content of HMIs in environmental water in-situ or remotely. Firstly, a series of novel fluorescent multi-functional monomers (FMFM) which possess the advantages of ion recognition ability, fluorescent turn-on function and high sensitivity will be be designed, screened and synthesized based on simulating computation. By using the obtained FMFM, the high selective ion-imprinted membranes will be prepared directly on the optical fibers. Then, an ion-imprinted fluorescent optical-fiber sensor (IIFOS) will be designed and assembled by using the modified optic fiber as sensing element. Finally, the IIFOS will be utilized to detect multiple HMIs in-situ and monitor the change of the content of HMIs remotely in environmental water. By merging the advantages of the high selectivity and durability of ion-imprinted polymer, the high sensitivity of flourescent probe and the good optical conductivity of optic fiber, the obtained IIFOS is expected to be stretched into anywhere of environmental water for the detection of HMIs in-situ or remotly.Thus, this research will be of great significance for the early warning and control about the HMIs pollution in environmental water.

英文关键词： Heavy metal ions;Environmental analysis;Analytical method;Sample pretreatment;Environmental pollutant