公开(公告)号：US20240328946A1

公开(公告)日：2024-10-03

申请号：US18267586

申请日：2022-10-13

申请人： Xiamen University

发明人： Donghui LI ,  Yan ZHANG ,  Ping HUANG ,  Yabin DENG

IPC分类号： G01N21/64

CPC分类号： G01N21/643 ,  G01N2201/06193 ,  G01N2201/127

摘要： The present disclosure provides a fluorescence analysis method for lithium ion determination using free-base phthalocyanine (FBPc) as a molecular probe, and relates to the technical field of fluorescent probes. The method includes the following steps: adding an alkaline organic medium separately into a plurality of reaction vessels, and adding a phthalocyanine organic solution having a same volume as that of the alkaline organic medium; adding lithium ion organic solutions with increasing concentrations in sequence; diluting an obtained reaction system, allowing to stand to conduct a reaction, scanning a fluorescence spectrum of the reaction system, and determining a relative fluorescence intensity at a fluorescence peak. A determination principle is that in organic media, especially an alkaline organic medium, lithium ions can react with the FBPc to emit strong red fluorescence, and generation of the fluorescence has the remarkable characteristics of ultra-sensitivity and high specificity.