Reversed-Micellar Extraction of Strontium(II) from Model Solutions of Seawater

被引：11
|
作者：
Naganawa, Hirochika [1 ]
Suzuki, Hideya [1 ]
Yanase, Nobuyuki [1 ]
Nagano, Tetsushi [1 ]
Noro, Junji [2 ]
机构：
[1] Japan Atom Energy Agcy, Nucl Sci & Engn Directorate, Ibaraki 3191195, Japan
[2] NISSAN ARC LTD, Res Dept, Yokosuka, Kanagawa 2370061, Japan
来源：
ANALYTICAL SCIENCES | 2011年 / 27卷 / 03期
基金：
日本学术振兴会;
关键词：
NITRIC-ACID; SOLVENT-EXTRACTION; N-DODECANE; N; N'; N'-TETRAOCTYL-3-OXAPENTANEDIAMIDE TODGA; METAL-IONS; LANTHANIDES(III); MICROEMULSION; SEPARATION; AM(III);
D O I：
10.2116/analsci.27.321
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In order to monitor a radioactive nuclide of strontium-90 in seawater around nuclear facilities, a solvent-extraction method for collecting Sr(II) in seawater was examined. A reversed-micellar extraction system containing an anionic surfactant AOT and a molecular extractant N,N,N',N'-tetra(n-octyl)diglycolamide (TODGA) in n-hexane was chosen for the extraction of Sr(II) from model solutions of seawater containing 0.5 M NaCl (I M = l mol dm(-3)), 0.05 M MgCl(2), and/or 0.01 M CaCl(2). The combination of AOT-forming reversed micelles and TODGA coordinating with Sr(II) as an organic ligand (extractant) was found to be efficient for the extraction of Sr(II) from model solutions. The mechanism of the reversed-micellar extraction system was also considered in the present study.
引用
收藏
页码：321 / 324
页数：4
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