期刊
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
卷 74-75, 期 -, 页码 190-193出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sab.2012.06.029
关键词
LIBS; Uranium ore; Quantitative analysis; Safeguards
类别
资金
- nuclear research and development program the National Research Foundation of Korea
- Ministry of Education, Science and Technology, Korea
Laser-induced breakdown spectroscopy (LIBS) has been recognized as a promising technique for analyzing sensitive nuclear materials such as uranium, plutonium, and curium in a high-radiation environment, especially since the implementation of IAEA (International Atomic Energy Agency) safeguards. The uranium spectra of ore samples were quantitatively analyzed prior to analyzing sensitive materials in the nuclear industry. The purpose of this experiment is to extract quantitative information about the uranium in a uranium ore using a standard addition approach. The uranium ore samples containing different concentrations of U were prepared by mixing raw ore powder with natural uranium oxide powders. Calibration sets of 0.2, 0.4, 0.6, 0.8 and 1.0 wt.% uranium concentrations within the uranium ore sample were achieved. A pulsed and Q-switched Nd:YAG laser at a wavelength of 532 nm was used as a light source. An echelle spectrometer that covers a 190-420 nm wavelength range is used to generate a calibration curve and determine the detection limit of uranium in the ore matrix. The neutral atomic-emission peak at a wavelength of 356.659 nm indicated a detection limit of similar to 158 ppm for uranium. and the uranium concentration was determined in a raw ore sample that has an unknown quantity of uranium. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.
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