Objective: To establish a fast, accurate and sensitive method for direct quantitative analysis of metal ions based on rare earth elements upconversion nanoparticles NaYF4: Yb, Er@TGA. accurate to fluorescence quenching or enhancement mechanism. Methods: Rare earth elements upconversion nanoparticles NaYF4: Yb, Er@TGA were prepared and characterized by solvothermal method. By measuring the influence of 14 common metal ions on the fluorescence intensity of NaYF4: Yb, Er@TGA, we screened the metal ion types that could increase or decrease the fluorescence intensity of NaYF4: Yb, Er@TGA in a linear relationship with the concentration of metal ions, so as to establish a new detection method. Results: The fluorescence intensity of metal ions Mg2+ and Fe3+ showed a good linear relationship with NaYF4: Yb, Er@TGA in the concentration ranges of 0～7.00 μg /mL and 0～6.00μg /mL, respectively. The linear coefficients of the standard curve equations were 0.992 4 and 0.998 2, respectively. The detection limits were 1.79 μg/mL and 1.30 μg/mL, and the recoveries were 95.5%～98.8% and 92.5%～97.8%, respectively. The relative standard deviations were 4.05% and 8.18%, respectively. Conclusion: This method has low detection limit, high accuracy and good precision, and is expected to be used for quantitative analysis of Mg2+ and Fe3+ in practical samples.
BAI Anqi
,
PENG Konghao
,
LUO Lixia
,
CUI Ruhui
,
YUE Xiaomei
,
LI Shurong
,
JI Hua
,
MENG peijun
. A method for direct quantitative analysis of metal ions based on rare earth elements upconversion nanoparticles NaYF4: Yb, Er@TGA[J]. Journal of Baotou Medical College, 2024
, 40(1)
: 91
-96
.
DOI: 10.16833/j.cnki.jbmc.2024.01.016
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