Rare-earth ions coordination enhanced ratiometric fluorescent sensing platform for quantitative visual analysis of antibiotic residues in real samples  

作　　者：Shihao Xu Lingfei Li Dan Lin Liang Yang Zhenyang Wang Changlong Jiang 

机构地区：[1]Institute of Solid State Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China [2]Key Laboratory of Photovoltaic and Energy Conservation Materials,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China [3]School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009,China

出　　处：《Chinese Chemical Letters》2023年第6期278-281,共4页中国化学快报（英文版）

基　　金：financially supported by National Natural Science Foundation of China(No.21876175);National Key Research and Development Program(No.2021YFD2000200);Key Research and Development Program of Anhui Province(No.202004d07020013)。

摘　　要：Levofloxacin(LVFX)as a representative drug of quinolone antibiotics is widely used in clinical,and its residues enriched in water bodies and sideline products seriously damage human health.It is imperative to develop a real-time/on-site sensing method for monitoring residual antibiotics.Here,we report a portable sensing platform by utilizing a composite fluorescent nanoprobe constructed by the cerium ions(Ce^(3+))coordination functionalized Cd Te quantum dots(QDs)for the visual and quantitative detection of LVFX residues.This fluorescent probe provides a distinct color variation from red to green,which shows a good linear relationship to LVFX residues concentrations in the range of 0-6.0μmol/L with a sensitive limit of detection(LOD)of 16.3 nmol/L.The smartphone platform with Color Analyzer App installed,which could accomplish quantified detection of LVFX in water,milk,and raw pork with a LOD of 27.9nmol/L.The facile sensing method we proposed realizes rapid visualization of antibiotics residual in the environment and provides a practical application pathway in food safety and human health.

关 键 词：Rare-earth ions Ratiometric fluorescence probe Smartphone sensing platform Quantitative detection LEVOFLOXACIN 

分 类 号：O657.3[理学—分析化学]