A simplified determination of uranium in phosphate rock and phosphogypsum by alpha-spectroscopy after its separation by liquid-extraction

被引：13

作者：

Andreou, Giorgos ^{[1
]}

Efstathiou, Maria ^{[1
]}

Pashalidis, Ioannis ^{[1
]}

机构：

[1] Univ Cyprus, Dept Chem, CY-1678 Nicosia, Cyprus

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2012年 / 291卷 / 03期

关键词：

Uranium; Phosphogypsum; Liquid extraction; Tributyl-phosphate; Alpha-spectroscopy; RADIONUCLIDES;

D O I：

10.1007/s10967-011-1365-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A relatively rapid, economic and robust procedure is described for the radiometric analysis of uranium in phosphate rock and phosphogypsum. The analysis is performed by alpha spectroscopy after pre-concentration and separation of uranium by liquid-extraction using tributyl-phosphate (30% TBP in dodecan) and finally its electrodeposition on stainless steel discs. The method has been successfully applied to 0.1 g samples of phosphate rock and phosphogypsum resulting in high-quality spectra for measurement times a parts per thousand yen15 h. The main advantage of the procedure is the use of tracer solution (U-232) that allows reliable measurements and evaluation of the separation procedure. The separation efficiency of the proposed method has been estimated to be (75 +/- A 20)%.

引用

页码：865 / 867

页数：3