基于铜纳米簇检测柠檬黄的方法研究  

Detection of lemon yellow based on copper nanoclusters

作　　者：陈中兰 廖俊宇 胡月 CHEN Zhonglan;LIAO Junyu;HU Yue(Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province,China West Normal University,Nanchong 637009)

机构地区：[1]西华师范大学化学化工学院,四川省化学合成与污染控制重点实验室,南充637009

出　　处：《分析试验室》2022年第3期307-311,共5页Chinese Journal of Analysis Laboratory

基　　金：西华师范大学英才基金项目(463105)资助。

摘　　要：采用L-半胱氨酸经一步湿化学法合成了稳定的铜纳米簇(CuCNs),优化了其制备条件,分别运用XPS和FTIR对其性能进行表征。CuCNs的荧光能被柠檬黄(LY)淬灭,推测其机理主要来自内滤效应。基于此,该荧光探针能选择检测LY,线性范围和检出限分别为3.33~60.0μmol/L和1.90μmol/L。该方法用于矿泉水和饮料中LY检测,回收率为95.5%~104.4%。L-cysteine stabilized copper nanoclusters(CuNCs)was synthesized by one-step wet chemical method,and its preparation conditions were optimized.Its properties were characterized by XPS and FTIR,respectively.The fluorescence of CuNCs was quenched with the addition of lemon yellow(LY),which mainly coming from inner filter effect(IFE).On this basis,the fluorescent probe can selectively detect LY,the linear range and detection limit are 3.33-60.0μmol/L and 1.90μmol/L,respectively.Furthermore,this method was successfully employed to detect LY in mineral water and beverage with a recovery range of 95.5%-104.4%.

关 键 词：铜纳米簇 柠檬黄 猝灭机理 优化 检测 

分 类 号：O657.3[理学—分析化学]