Rapid and Accurate Determination of Uranium in Uranium Ores in the Field Using TOPO Extraction and α-counting Method

HUANG Qiu-hong; LIU Li-kun; GUO Dong-fa; WANG Yu-xue; WU Zhao-hui; TANG San-xing; LI Hong-guang

2011 Vol. 30, No. 4

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Article navigation > Rock and Mineral Analysis > 2011 > 30(4): 423-429

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HUANG Qiu-hong, LIU Li-kun, GUO Dong-fa, WANG Yu-xue, WU Zhao-hui, TANG San-xing, LI Hong-guang. Rapid and Accurate Determination of Uranium in Uranium Ores in the Field Using TOPO Extraction and α-counting Method[J]. Rock and Mineral Analysis, 2011, 30(4): 423-429.

Citation:

Rapid and Accurate Determination of Uranium in Uranium Ores in the Field Using TOPO Extraction and α-counting Method

1.
Beijing Research Institute of Uranium Geology, Beijing 100029, China
2.
Beijing Research Institute of Uranium Geology, Beijing 100029, China
3.
Beijing Research Institute of Uranium Geology, Beijing 100029, China
4.
Research Institute No.240, China National Nuclear Corporation, Shenyang 110032, China
5.
Beijing Research Institute of Uranium Geology, Beijing 100029, China
6.
Beijing Research Institute of Uranium Geology, Beijing 100029, China
7.
Research Institute No.240, China National Nuclear Corporation, Shenyang 110032, China

Received Date: 16 November 2010

Revised Date: 20 March 2011

Publish Date: 28 August 2011

Abstract

Abstract

The method of TOPO extraction followed by α-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 α 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.
- uranium /
- uranium /
- ore /
- field /
- determination