On-line preconcentration of rare earth element by FIA-ICP-AES

被引：5

作者：

Lee, GH ^{[1
]}

Park, SA

Song, K

Cha, HK

Lee, J

Lee, SC

机构：

[1] Chungnam Natl Univ, Dept Chem, Taejon, South Korea

[2] Korea Atom Energy Res Inst, Laser Spect Lab, Taejon, South Korea

[3] Kyungnam Univ, Dept Chem, Masan, South Korea

来源：

ANALYTICAL SCIENCES | 1997年 / 13卷

关键词：

ICP-AES; flow injection analysis; resin; rare earth element;

D O I：

10.2116/analsci.13.Supplement_27

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A mini-column filled with Dowex 50x8 resin is developed and investigated for the analysis of trace level of rare earth element by ICP-AES. The column is installed between peristaltic pump and ICP-AES, and ng/ml level of rare earth element is analyzed directly by on-line FTA-ECP-AES. 6N hydrochloric acid is found to be an optimum concentration for stripping, and the optimum flow rates for loading and stripping are measured at 0.8 and 1.1 ml./min, respectively. Easily ionized elements from flux such as Na and K would be eliminated easily by 2N hydrochloric acid before stripping the rare earth element deposited on the resin. For an analysis of Sm, the absolute detection limit and linearity are found to be than 4% of reproducibility is observed for the analysis of Sm and Nd. The analytical result with NIST SRM 1633B is also found to be 20.3 ng/ml, which agrees well with the certified value.

引用

页码：27 / 30

页数：4

共 9 条

[1] EXPLOITING STOPPED-FLOW INJECTION METHODS FOR QUANTITATIVE CHEMICAL-ASSAYS [J].