Determination of Cd(II), Cu(II) and Ni(II) in aqueous samples by ICP-OES after on-line preconcentration in column packed with silica modified with 2-aminothiazole

被引：24

作者：

Castro, Gustavo R. ^{[2
]}

Cristante, Valtair M. ^{[2
]}

Padilha, Cilene C. F. ^{[3
]}

Jorge, Sonia M. A. ^{[1
]}

Florentino, Ariovaldo O. ^{[1
]}

Prado, Alexandre G. S. ^{[4
]}

Padilha, Pedro M. ^{[1
]}

机构：

[1] UNESP, Dept Quim & Bioquim, IB, BR-18618000 Botucatu, SP, Brazil

[2] UNESP, Dept Quim & Analit, Araraquara, SP, Brazil

[3] UNESP, Dept Fis & Biofis, IB, Botucatu, SP, Brazil

[4] Univ Brasilia, Dept Quim Inorg, IQ, Brasilia, DF, Brazil

来源：

MICROCHIMICA ACTA | 2008年 / 160卷 / 1-2期

关键词：

pre-concentration; 2-aminothiazole; flow-injection system; sol-gel method; ICP-OES;

D O I：

10.1007/s00604-007-0845-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学]; 081704 [应用化学];

摘要：

This work describes the synthesis and characterization of 2-aminothiazole modified silica gel (SiAT) and the studies of adsorption and pre-concentration (in batch and using a flow-injection system coupled with optical emission spectrometer) of Cd(II), Cu(II) and Ni(II) in aqueous medium. The adsorption capacity for each metal ions in mmolg(-1) was: Cu(II) = 1.18, Ni(II) = 1.15 and Cd(II) = 1.10. The results obtained in the flow experiments showed about 100% of recovering of the metal ions adsorbed in a mini-column packed with 100 mg of SiAT, using 100 mu L of 2.0 mol L-1 HCl solution as eluent. The quantitative sorption-desorption of the metal ions made possible the application of a flow-injection system in the pre-concentration and quantification by ICP-OES of metal ions at trace level in natural water samples.

引用

页码：203 / 209

页数：7

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