Detection of copper ions and glutathione based on off-on fluorescent gra-phene quantum dots
10.11665/j.issn.1000 -5048.20180112
- VernacularTitle:石墨烯量子点荧光猝灭-恢复法测定Cu2+与谷胱甘肽的含量
- Author:
Fengjuan SONG
1
;
Yongling AI
;
Wenying ZHONG
;
Jing WANG
Author Information
1. 中国药科大学 医药生物功能材料重点实验室 南京210009
- Keywords:
graphene quantum dots;
Cu2+;
glutathione;
fluorescence quenching-recovery;
content determination
- From:
Journal of China Pharmaceutical University
2018;49(1):87-92
- CountryChina
- Language:Chinese
-
Abstract:
We developed a rapid method to detect Cu2+and glutathione(GSH)based on the fluorescence quenching-recovery properties of graphene quantum dots(GQDs),which were synthesized by the gentle oxidation of graphite powder.The results revealed that the fluorescence intensity of GQDs versus concentration of Cu2+and GSH had good linearity, with the detection limits of 0.01 and 0.1 mmol/L, respectively.The fluorescence quenching was linearly proportional to the concentrations of Cu2+ranging from 1.0 to 10.0 mmol/L;the fluores-cence intensity was linearly enhanced with the concentrations of GSH ranging from 0.1 to 1.0 mmol/L.In addi-tion,the method was successfully applied to the determination of real samples with recoveries falling between 93％-101％ and 96％-107％,respectively.This method is simple,accurate and precise.There was no interference with other familiar co-existing metal ions and potential materials.
