首页|基于稀土掺杂上转换纳米材料NaYF4:Yb,Er@TGA直接对金属离子进行定量分析的方法探究

基于稀土掺杂上转换纳米材料NaYF4:Yb,Er@TGA直接对金属离子进行定量分析的方法探究

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目的:基于荧光猝灭或增强机制,构建稀土掺杂上转换纳米材料NaYF4:Yb,Er@TGA直接对金属离子进行定量分析的方法,实现对金属离子快速、准确、灵敏检测.方法:通过溶剂热法制备出性能优良的稀土掺杂上转换纳米材料NaYF4:Yb,Er@TGA,并对其进行表征;通过测量 14 种常见的金属离子对NaYF4:Yb,Er@TGA荧光强度的影响,筛选能够引起NaYF4:Yb,Er@TGA荧光强度增强或下降,且与金属离子浓度呈线性关系的金属离子类型,进而建立检测新方法.结果:金属离子Mg2+、Fe3+分别在浓度范围为0~7.00 μg/mL、0~6.00 μg/mL与NaYF4:Yb,Er@TGA 的荧光强度呈现良好的线性关系,其标准曲线方程的线性系数分别为0.992 4、0.998 2,检出限分别为 1.79 μg/mL、1.30 μg/mL,加标回收率分别为 95.5%~98.8%、92.5%~97.8%,方法相对标准偏差分别为 4.05%、8.18%.结论:该方法检测限低、准确度较高、精密度较好,有望用于实际样品中Mg2+、Fe3+定量分析.
A method for direct quantitative analysis of metal ions based on rare earth elements upconversion nanoparticles NaYF4:Yb,Er@TGA
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 en-hancement 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 inten-sity 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 preci-sion,and is expected to be used for quantitative analysis of Mg2+and Fe3+in practical samples.

Rare earth elements upconversion nanoparticlesNaYF4:Yb,Er@TGAMetal ionQuantitative analysis

白安琪、彭孔浩、罗利霞、崔茹慧、岳晓梅、李淑荣、冀华、孟佩俊

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包头医学院公共卫生学院,内蒙古 包头 014040

内蒙古自治区卫生检测与评价工程技术中心

稀土掺杂上转换纳米材料 NaYF4:Yb,Er@TGA 金属离子 定量分析

国家自然科学基金内蒙古自治区高等学校青年科技英才支持项目内蒙古自治区自然科学基金内蒙古自治区卫生健康委医疗卫生科技计划项目包头医学院花蕾计划

81960601NJYT230262021MS08055202201383HLBTMC202223

2024

包头医学院学报
内蒙古科技大学包头医学院

包头医学院学报

影响因子:0.543
ISSN:1006-740X
年,卷(期):2024.40(1)
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