岩矿测试2011，Vol.30Issue(4)：423-429,7.
野外现场铀矿石中铀的快速准确测定方法研究——TOPO萃取α计数法
Rapid and Accurate Determination of Uranium in Uranium Ores in the Field Using TOPO Extraction and α-counting Method
摘要
Abstract
The method of TOPO extraction followed by a-counting has been developed for field determination of uranium in uranium ores. The traditional method of field uranium determination is by spectrometry. The content of uranium using that method is determined by the intensity of the ray, therefore, results have larger errors when uranium and radium are in equilibrium. The method researched by this article combines the nuclear and chemical properties of uranium. The content of the uranium is determined directly by the intensity recorded by an a counter after following dissolution and extraction processes. The detection limit of uranium is 2.41 μg/g. When the content of uranium is about 100 μg/g, the relative standard deviation ( RSD) is 5. 93% . The determining range of uranium is 7. 23 μg/g - n%. The dissolution method requires less reagents, has better dissolving efficiency and less pollution. The extraction method has the advantage and efficiency ( >97% ). The equipment is portable so consequently can be used in the field where operation is simple and rapid, with higher precision and accuracy than the traditional method.关键词
铀/铀矿石/野外现场测定/TOPO萃取/α计数法Key words
uranium/ uranium ore/ field determination/ TOPO extraction/ a counting technique引用本文复制引用
黄秋红,刘立坤,郭冬发,王玉学,武朝晖,汤三星,李红光..野外现场铀矿石中铀的快速准确测定方法研究——TOPO萃取α计数法[J].岩矿测试,2011,30(4):423-429,7.基金项目
国土资源部公益性行业科研专项(200911043-30) （200911043-30）
