Determination of non-rare earth impurities in high purity lanthanum oxide by inductively coupled plasma atomic emission spectrometry after HPLC separation using P507 resin

被引：0

作者：

Ruth, WJ ^{[1
]}

Jiang, ZC ^{[1
]}

Hu, B ^{[1
]}

Shuai, Q ^{[1
]}

Qin, YC ^{[1
]}

Wang, L ^{[1
]}

机构：

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

来源：

JOURNAL OF RARE EARTHS | 2001年 / 19卷 / 04期

关键词：

rare earths; HPLC; 2-ethylhexyl hydrogen 2-ethylhexylphosphonate (P507); ICP-AES; high-purity lanthanum oxide; non rare earth impurities;

D O I：

暂无

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A new method for the determination of trace non-rare earth elements (NREEs) impurities in high-purity lanthanum oxide by HPLC combined with ICP-AES is proposed. The chromatographic retention behaviors of matrix (La) and NREEs were studied using 2-ethylhexyl hydrogen 2-ethylhexyl phosphonate (P507) chelating resin as the stationary phase and dilute nitric acid as the mobile phase. It is found that the use of pH 1.7 nitric acid enables effective elution of NREEs from HPLC column, but the lanthanum remains on the column. The experimental results show that a favorable separation between matrix lanthanum and NREEs can be obtained within 15 min. The method proposed is applied to the determination of 8 NREEs impurities in high-purity La2O3. The recoveries of 8 NREEs are in the range of 90 % similar to 110 %.

引用

页码：299 / 303

页数：5

共 21 条

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