A selective electromembrane extraction of uranium (VI) prior to its fluorometric determination in water

被引：57

作者：

Davarani, Saied Saeed Hosseiny ^{[1
]}

Moazami, Hamid Reza ^{[1
]}

Keshtkar, Ali Reza ^{[2
]}

Banitaba, Mohammad Hossein ^{[1
]}

Nojavan, Saeed ^{[1
]}

机构：

[1] Shahid Beheshti Univ, Fac Chem, GC, Tehran 1983963113, Iran

[2] Nucl Sci & Technol Res Inst, Tehran, Iran

来源：

ANALYTICA CHIMICA ACTA | 2013年 / 783卷

关键词：

Electromembrane extraction; Uranium; Fluorometry; Seawater; LASER-INDUCED FLUOROMETRY; ARTIFICIAL LIQUID-MEMBRANES; ELECTROKINETIC MIGRATION; DIFFERENTIAL TECHNIQUE; WASTE-WATER; SAMPLES; PRECONCENTRATION; SURFACE; QUANTIFICATION; SEPARATION;

D O I：

10.1016/j.aca.2013.04.045

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学];

摘要：

A novel method for the selective electromembrane extraction (EME) of U6+ prior to fluorometric determination has been proposed. The effect of extraction conditions including supported liquid membrane (SLM) composition, extraction time and extraction voltage were investigated. An SLM composition of 1% di-2-ethyl hexyl phosphonic acid in nitrophenyl octyl ether (NPOE) showed good selectivity, recovery and enrichment factor. The best performance was achieved at an extraction potential of 80 volts and an extraction time of 14minutes Under the optimized conditions, a linear range from Ito 1000 ngmL(-1) and LOD of 0.1 ngmL(-1) were obtained for the determination of U6+. The EME method showed good performance in sample cleanup and the reduction of the interfering effects of Mn2*, Zn2+, Cd2+, Ni2+, Fe3+, Co2+, Cu2+, Cl- and PO43- ions during fluorometric determination of uranium in real water samples. The recoveries above 54% and enrichment factors above 64.7 were obtained by the proposed method for real sample analysis. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：74 / 79

页数：6

共 44 条

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Determination of ultra trace amounts of uranium (VI) by adsorptive stripping voltammetry using L-3-(3, 4-dihydroxy phenyl) alanine as a selective complexing agent [J].