研究目的
To synthesize water-soluble glutathione modified CdSe quantum dots and investigate their application in the determination of trace Hg2+ ions.
研究成果
The study successfully synthesized water-soluble glutathione modified CdSe quantum dots with optimal conditions and demonstrated their application as a fluorescence probe for detecting trace Hg2+ ions in the range of 0.3-15 μg/L.
研究不足
The study is limited to the synthesis and application of glutathione modified CdSe quantum dots for Hg2+ ion detection. The sensitivity and selectivity of the method in complex matrices were not extensively explored.
1：Experimental Design and Method Selection:
The study involved the synthesis of glutathione modified CdSe quantum dots in an aqueous solution and the investigation of their interaction with Hg2+ ions.
2：Sample Selection and Data Sources:
Selenium powder, Cd(OAc)2·2H2O, glutathione, NaBH4, NaOH, and HgCl2 were used as reagents.
3：List of Experimental Equipment and Materials:
FL3-211-Pluminescence spectrometer and powder X-ray diffraction were used for analysis.
4：Experimental Procedures and Operational Workflow:
The synthesis involved the reaction of Se and NaBH4 to form NaHSe solution, which was then injected into a Cd precursor solution with glutathione under N2 atmosphere. The mixture was refluxed to promote quantum dots growth.
5：Data Analysis Methods:
Fluorescence spectra were recorded to study the fluorescence intensity and quenching effect.
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