免定标激光诱导等离子体光谱分析铀矿石成分  

Analysis of uranium ore composition by calibration-free laser-induced plasma spectroscopy

作　　者：何运 高智星[1] 王远航 王钊[1] 胡桢麟 戴明建 HE Yun;GAO Zhixing;WANG Yuanhang;WANG Zhao;HU Zhenlin;DAI Mingjian(China Institute of Atomic Energy,Beijing 102413,China;Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Geological Party No.208,CNNC,Baotou 014010,China)

机构地区：[1]中国原子能科学研究院,北京102413 [2]中国科学院上海光学精密机械研究所强场激光物理国家重点实验室,上海201800 [3]核工业二〇八大队,内蒙古包头014010

出　　处：《冶金分析》2024年第5期84-91,共8页Metallurgical Analysis

基　　金：中国原子能科学研究院核物理研究所所长基金(18YA010251223293)。

摘　　要：铀是核能开发利用过程中的核心元素,对含铀材料的快速、原位定量分析有助于保证核材料的品质和安全。激光诱导等离子体光谱(LIPS)是一种广受关注的技术,可用于铀元素快速现场原位分析。免定标激光诱导等离子体光谱(CF-LIPS)不依赖标准样品即可实现定量分析,这在铀矿石的现场快速定量分析上具有独特的应用价值。本工作将CF-LIPS应用于铀矿石样品的原位检测,通过建立CF-LIPS实验装置和分析程序以及补充铀元素相关的谱线数据对铀矿石样品中铀、硅、铁、钛、铝、镁和钙元素进行了定量分析。通过H-α谱线的斯塔克展宽和萨哈-玻尔兹曼图法计算铀矿石标准物质GBW04101等离子体电子密度和温度分别为(8.13±0.52)×10^(16)cm^(-3)和(9776.8±91.5)K。元素分析结果显示,上述7种元素测定结果的相对误差均小于10%。结果表明,采用CF-LIPS分析含铀物质具有较好的应用前景与价值。Uranium is the core element in the process of nuclear energy development and application.The rapid and in-situ quantitative analysis of uranium-containing materials is helpful to guarantee the quality and safety of nuclear materials.Laser-induced plasma spectroscopy(LIPS)is a widely concerned technology,which can be used for the rapid and in-situ analysis of uranium elements.Calibration-free laser induced plasma spectroscopy(CF^(-)LIPS)can achieve the quantitative analysis without the dependence of standard samples,which has a unique application value in the rapid quantitative analysis of uranium ore.In this work,CF^(-)LIPS was applied to the in-situ detection of uranium ore samples.The quantitative analysis of U,Si,Fe,Ti,Al,Mg and Ca elements in uranium ore standard was carried out through the establishment of CF^(-)LIPS experimental device and analysis program and the addition of spectral line data of uranium.The plasma electron density and temperature of uranium ore standard substance GBW04101 were calculated by Stark broadening of H-αspectral line and Saha-Boltzmann plot method,which was(8.13±0.52)×10^(16)cm^(-3)and(9776.8±91.5)K,respectively.The results of elemental analysis showed that the relative errors of the above seven elements were all less than 10%.The results showed that the CF^(-)LIPS method had a good application prospect and value in the analysis of uranium-containing substances.

关 键 词：激光诱导等离子体光谱(LIPS) 免定标激光诱导等离子体光谱(CF-LIPS) 铀矿石 定量分析 

分 类 号：O657.38[理学—分析化学] TL27[理学—化学]