@article{ZHANG2024, 
author = {Jiaran ZHANG and Zeyu XU and Jie YU and Ce SHI and Yuntao YUE},
title = {Determination of Copper Ion in Drinking Water Using Poly(vinyl alcohol)/3-Mercaptopropionic Acid-Capped InP/ZnS Quantum Dots Fluorescent Film},
year = {2024},
journal = {Food Science},
volume = {45},
number = {14},
pages = {227-233},
keywords = {copper ion, fluorescent film, quantum dots, drinking water, rapid detection},
url = {https://www.sciopen.com/article/10.7506/spkx1002-6630-20230724-261},
doi = {10.7506/spkx1002-6630-20230724-261},
abstract = {PVA/MPA-InP/ZnS QD fluorescent film for rapid detection of trace Cu2+ was developed using 3-mercaptopropionic acid (MPA)-capped InP/ZnS quantum dots (MPA-InP/ZnS QDs) as the fluorescence-sensitive material and polyvinyl alcohol (PVA) as the substrate. The microstructure, optical properties and mechanical properties of the fluorescent film were characterized. The results showed that PVA interacted with MPA-InP/ZnS QDs through hydrogen bonds. The fluorescence intensity of the film was significantly correlated with Cu2+ concentration in the range of 0–1000 nmol/L (R2 = 0.95). The limit of detection (LOD) for Cu2+ was 23 nmol/L, and the response time was 6 minutes. Finally, the film was applied to the detection of trace Cu2+ in drinking water, beverages and alcoholic drinks with the advantages of high selectivity, rapid response and good portability, which exhibited a broad application prospect.}
}