Determination of rare earth elements in seawater by inductively coupled plasma mass spectrometry with on-line column pre-concentration using 8-quinolinole-immobilized fluorinated metal alkoxide glass

被引:69
作者
Kajiya, T
Aihara, M
Hirata, S
机构
[1] AIST, Hiroshima 7370197, Japan
[2] Kinki Univ, Grad Sch Ind Technol, Higashihiroshima 7392116, Japan
关键词
rare earth elements; seawater; 8-quinolinole-immobilized fluorinated metal alkoxide glass (MAF-8HQ); inductively coupled plasma mass spectrometry (ICP-MS); on-line column pre-concentration;
D O I
10.1016/j.sab.2003.12.019
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
The on-line column pre-concentration technique with inductively coupled plasma mass spectrometry (ICP-MS) has been developed using micro-column of 8-quinolinole-immobilized fluorinated metal alkoxide glass (MAF-8HQ). The aim of method was to determine rare earth elements (REEs) (Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tin, Yb and Lu) in seawater. A 6.4 ml of seawater sample was passed through the column for 2 min, after washing the column with ultrapure water, the adsorbed REEs were subsequently eluted into the plasma with 1.4 M nitric acid. Sample pH, sampling and eluting flow rates and acidity of eluent were optimized. Detection limits (3sigma) based on three times standard deviations of water by 8 replicates were in the range from 0.11 pg ml(-1) for Y to 0.30 pg ml(-1) for Tb, and the precisions by a 10 pg ml(-1) REEs standard solution (n = 8) were in the range from 4.7% for Tm to 8.7% for Tb and Yb. Analysis of one sample could be processed in 7 min. The proposed method was verified by determination of REEs in the two certified reference materials (CRMs) of seawater, CASS-4 and NASS-5. and the method was also applied to determine REEs in the costal seawater of Hiroshima Bay, the Seto Inland Sea, Japan. (C) 2004 Elsevier B.V All rights reserved.
引用
收藏
页码:543 / 550
页数:8
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