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Determination of Copper Ion in Drinking Water Using Poly(vinyl alcohol)/3-Mercaptopropionic Acid-Capped InP/ZnS Quantum Dots Fluorescent Film
- Source :
- Shipin Kexue, Vol 45, Iss 14, Pp 227-233 (2024)
- Publication Year :
- 2024
- Publisher :
- China Food Publishing Company, 2024.
-
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 0–1 000 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.
Details
- Language :
- English, Chinese
- ISSN :
- 10026630
- Volume :
- 45
- Issue :
- 14
- Database :
- Directory of Open Access Journals
- Journal :
- Shipin Kexue
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.712dede673d048ce853203d59d576117
- Document Type :
- article
- Full Text :
- https://doi.org/10.7506/spkx1002-6630-20230724-261