具有固相微萃取功能的SERS光纤传感器的设计及应用研究

发布时间：2018-01-09 23:22

本文关键词：具有固相微萃取功能的SERS光纤传感器的设计及应用研究　出处：《光谱学与光谱分析》2016年S1期 　论文类型：期刊论文

【摘要】：基于光纤消逝场传感原理,发展一种集固相微萃取和表面增强拉曼散射(SERS)技术于一体的快速、超灵敏检测技术。采用具有光传导功能的光纤作为载体,首先通过层层组装技术,将具有选择性吸附的氧化石墨烯(GO)键合到光纤纤芯侧面作为固相微萃取层,然后通过原位组装技术,将具有SERS活性的贵金属纳米粒子构建到GO表面作为SERS基底,开发出固相微萃取-SERS技术于一体的双功能光纤。利用光纤耦合器将功能光纤与便携式拉曼光谱仪耦合,实现固相微萃取和SERS光纤技术有效集成。结合传统顶空固相微萃取和内标法进行分析,实现水体中超痕量芳环类化合物快速半定量分析。该技术在食品快检、环境在线监测、预警等领域有着广泛的应用。
[Abstract]:Based on the principle of optical fiber evanescent field sensing, a fast technique of solid-phase microextraction (SPME) and surface-enhanced Raman scattering (SERS) has been developed. Hypersensitive detection technology. The optical fiber with light conduction function is used as the carrier, first through the layer by layer assembly technology. The graphene oxide with selective adsorption was bonded to the fiber core side as the solid phase microextraction layer and then was assembled in situ. The noble metal nanoparticles with SERS activity were constructed on the surface of go as SERS substrate. A dual-function fiber with solid phase microextraction (SERS) technology was developed, and the fiber coupler was used to couple the functional fiber with the portable Raman spectrometer. Solid-phase microextraction (SPME) and SERS fiber technology were effectively integrated, combined with traditional headspace solid-phase microextraction (SPME) and internal standard method. Rapid semi-quantitative analysis of ultra-trace aromatic compounds in water is realized. This technology has been widely used in food rapid detection, environmental on-line monitoring, early warning and other fields.
【作者单位】：吉林大学理论化学研究所超分子结构与材料国家重点实验室;吉林化工学院分析测试中心;
【基金】：国家自然科学基金项目(21373096,91441105,21573087,21573092)资助
【分类号】：O657.37;TP212
【正文快照】： 环境污染监控是现阶段分析领域面临的十分棘手的问题,高灵敏度、小型集成化、响应速度快的便携检测仪器的发展是解决上述问题的关键。样品前处理主要包括采样、分离、纯化、富集,以实现减少杂质等带来的干扰或对待测物质富集已达到高分辨、超痕量分析的目的,为此,样品的前处理

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