基于柔性、透光SERS基底的农残快速原位检测方法研究

项目名称： 基于柔性、透光SERS基底的农残快速原位检测方法研究

项目编号： No.21507124

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 化学工业

项目作者： 钟鹭斌

作者单位： 中国科学院城市环境研究所

项目金额： 21万元

中文摘要： 农药大量使用导致的农产品污染，已引起人们的广泛关注。现有检测方法成本高、周期长，难以满足实际应用中快速抽检的需求。因此，急需发展一种能够快速原位检测农产品表面残留农药的方法。本项目以拉曼活性纳米粒子制备——柔性、透光SERS基底性能优化——原位检测影响因素分析为主线，重点研究纳米粒子组装的影响因素，优化纳米粒子组装参数，构建高增强因子纳米组装结构，并探讨纳米组装结构与增强因子间的构效关系；研究增强SERS基底农药吸附富集能力的方法,阐明原位检测过程中SERS基底与农药的界面过程；分析原位检测过程中的影响因素，优化检测工艺，阐明检测过程中的相关机理，为现场快速抽检农残提供理论指导和数据支持。最终，建立一种简便、快速、低成本和高灵敏的农产品表面残留农药检测新方法，保障农产品的食用安全，具有良好的应用前景。

中文关键词： 柔性；透光；表面增强拉曼光谱；农药残留；快速原位检测

英文摘要： With the extensive consumption of pesticides, health risk associated with residual pesticides on farm products surface has attracted great attention. However, current detection techniques usually require long testing time and high cost, which could not fulfill the need of rapid detection of random sampling in daily practice. Thus, it is important to develop a rapid in situ method for the detection of residual pesticides on the agriculture products surface. Through preparation of SERS-active nanoparticles, optimization of flexible transparent SERS substrates, and influencing factors analysis of in situ detection, this project focusing on analyzing the influencing factors of nanoparticles assembly, optimizing nanoparticles assembling parameter, constructing nanoparticles assembled structure with high Raman enhancement factor, discussing the relationship between nanoparticles assembled structure and Raman enhancement factor, exploring the method of improving the adsorption capacity for pesticides, and explaining the interface process between SERS substrates and pesticides during the in situ detection the process. By analyzing the influencing factors in the in situ detection the process, optimizing detection technique, elaborating the associated mechanism in detection the process, the project aims to provide theoretical guidance and data support for in situ detection of pesticide residues. The successful implementation of this project could enable the development of a novel simple, rapid, highly sensitive and cost-effective testing method for residual pesticides on irregular shaped farm product surfaces. This novel method could be applied in widespread applications as an onsite rapid random sampling and detection method.

英文关键词： flexible; transparent;SERS ;pesticide residues; rapid in situ detection