Nanometer-sized titanium dioxide micro-column on-line preconcentration of La, Y, Yb, Eu, Dy and their determination by inductively coupled plasma atomic emission spectrometry

被引：116

作者：

Liang, P ^{[1
]}

Hu, B ^{[1
]}

Jiang, ZC ^{[1
]}

Qin, YC ^{[1
]}

Peng, TY ^{[1
]}

机构：

[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 2001年 / 16卷 / 08期

关键词：

D O I：

10.1039/b104050m

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new method using a micro-column packed with nanometer sized TiO2 as a sorbent has been developed for the on-line preconcentration of trace amounts of rare earth elements (La, Y, Yb, Eu and Dy) prior to their determination by inductively coupled plasma atomic emission spectrometry (ICP-AES). The effects of pH, sample flow rate and volume, elution solution and interfering ions on the separation of analytes have been investigated. The adsorption capacity of nanometer TiO2 for La, Y, Yb, Eu and Dy was found to be 7.0, 6.1, 9.8, 8.3 and 8.8 mg g(-1), respectively. The method has been successfully applied for the determination of trace rare earth elements in some environmental samples.

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页码：863 / 866

页数：4

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