摘要
通过将碳点和量子点混合成为双发射比率荧光探针,实现对食品接触材料中双酚A进行定性和定量检测。结果表明,双酚A能够特异性地猝灭比率荧光探针的荧光,双酚A浓度与比率探针荧光强度的关系曲线在0.2~219 nmol/L范围内成良好线性关系,该方法检出限为0.13 nmol/L。实现了对目标物双酚A的高选择性、高灵敏度、低成本、快速荧光传感检测。
Quantum dots and carbon dots were mixed to form a dual-emission ratiometric fluorescent probe,which could be used for the qualitative and quantitative detection of bisphenol A(BPA)in food contact materials.The results showed that the fluorescence of the ratiometric fluorescent probe could be specifically quenched by BPA.The relationship between the concentration of BPA and the fluorescence intensity of the ratiometric probe was linear in the range of 0.2-219 nmol/L with the limit of detection(LOD)of 0.13 nmol/L.The ratiometric fluorescent probe can detect BPA with high selectivity,high sensitivity,low cost and fast fluorescence sensing.
作者
何雨
王硕
王俊平
HE Yu;WANG Shuo;WANG Junping(State Key Laboraotry of Food Nutrition and Safety,College of Biotechnology and Food Engineering,School of Food Science and Engineering,Tianjin 300457;Tianjin Key Laboratory of Food Science and Health,School of Medicine,Nankai University,Tianjin 300071)
出处
《分析试验室》
CAS
CSCD
北大核心
2020年第8期895-898,共4页
Chinese Journal of Analysis Laboratory
基金
国家重点研发项目(2016YFD0401202)
天津创新平台专项(17PTGCCX00230)资助。
关键词
碳点
量子点
比率荧光
食品接触材料
双酚A
carbon dots(CDs)
quantum dots(QDs)
ratiometric fluorescence
food contact materials
Bisphenol A(BPA)
