Thin Film-XRF Determination of Uranium Following Thin-Film Solid Phase Extraction

被引：3
作者：
Hassan, Jalal [1 ]
Hosseini, Seyed M. [2 ,3 ]
Mozaffari, Shahla [2 ]
Jahanparast, Babak [3 ]
Karbasi, Mohammad H. [3 ]
机构：
[1] Univ Tehran, Fac Vet Med, Dept Toxicol, Tehran, Iran
[2] Payame Noor Univ, Dept Chem, Tehran, Iran
[3] Minist Ind & Mineral, Iranian Mineral Proc Res Ctr, Karaj, Iran
来源：
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2014年 / 25卷 / 06期
关键词：
uranium; thin film; X-ray florescence; preconcentration; TRACE-LEVEL; PRECONCENTRATION; THORIUM(IV); SEPARATION; IONS;
D O I：
10.5935/0103-5053.20140083
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A sensitive method based on the preconcentration of uranium on modified filter paper (thin film) has been developed to determinate this element in water and soil samples by wavelength dispersive X-ray fluorescence. Uranium (VI) extraction from nitric acid medium by trioctyl phosphine (TOPO) from 100 mL of sample was carried out. The effects of nitric acid concentration, TOPO concentration and sample breakthrough on uranium extraction were investigated in this study. The proposed method provided good linearity from 7 to 1000 mu g and the limit of detection (LOD), based on a signal-to noise ratio (S/N) of 3, was 2.5 mu g.
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收藏
页码：1086 / 1090
页数：5
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