基于表面增强拉曼散射的敌草快检测方法  

Surface-enhanced Raman Scattering-based Diquat Detection

作　　者：刘培培[1] 韩晓霞[1] 赵冰[1] 徐蔚青[1] 王旭[1] 

机构地区：[1]吉林大学超分子结构与材料国家重点实验室,长春130012

出　　处：《高等学校化学学报》2015年第8期1517-1520,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21073072;21111140380;21403082;21273091;2011YQ03012408)资助~~

摘　　要：利用表面增强拉曼散射（SERS）技术,以银镜为SERS活性基底,建立了一种快速检测敌草快的分析方法.紫外光谱结果表明,敌草快分子在pH≤9的条件下可以稳定存在;在较宽的范围内（pH=1～9）pH值对SERS检测结果无影响.因此,无需对敌草快溶液的pH值进行调节即可进行SERS检测,简化了待测样品的预处理过程.SERS光谱检测结果表明,敌草快的特征峰强度随着浓度的降低而降低.该方法对敌草快的检测限可以达到10^-8mol/L.此方法操作简单,检测速度快,能够实现对敌草快的无损检测分析.Based on surface-enhanced raman scattering（ SERS） technique,a rapid analytical method for diquat detection with silver mirror as SERS-active substrates was developed. UV-Vis spectral analysis suggest that diquat molecules can keep stable in a solution at pH≤9 and the differet pH values do not influence the SERS active substrate and the SERS result. Therefore,SERS detection can be carried out directly without any pretreatment process. The SERS results show that the characteristic peak intensity of diquat decreases when its concentration decreases. The minimum detectable concentration of the method is as low as 10^-8mol / L. The method is easy to conduct and can realize non-destructive and rapid analysis.

关 键 词：表面增强拉曼散射光谱 1 1'-乙撑-2 2'-联吡啶二溴盐 敌草快 银镜 检测 

分 类 号：O657.37[理学—分析化学]