Quantification of rare earth elements using laser-induced breakdown spectroscopy
Quantification of rare earth elements using laser-induced breakdown spectroscopy
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DOI：
10.1016/j.sab.2015.10.005
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发表时间：
2015-12-01
影响因子：
3.3
通讯作者：
Andre, Nicolas
中科院分区：
文献类型：
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作者：
Martin, Madhavi;Martin, Rodger C.;Andre, Nicolas
利用激光诱导击穿光谱（LIBS）技术研究了钇（Y）和铕（Eu）、钆（Gd）、镧（La）、镨（Pr）、钕（Nd）和钐（Sm）等6种稀土元素的激光烧蚀后的光发射随激光烧蚀浓度的变化。使用多变量分析的统计方法已被用来获得的采样误差，回归系数，校准，和交叉验证的测量，因为它们涉及到的LIBS分析在石墨基质颗粒掺杂元素在几个浓度。将每种元素（以氧化物形式）以1重量%至50重量%的百分比混合在石墨基质中，并获得每种组合物以及纯氧化物样品的LIBS光谱。最后，一个单一的小球与所有元素在相等的氧化物质量混合，以确定我们是否可以识别元素峰在混合小球这个数据集是相关的未来应用程序的研究裂变产物的含量和分布在辐照核燃料。这些结果表明，LIBS技术本质上是非常适合未来的核材料原位分析的挑战。这些研究还表明，LIBS光谱分析，使用统计方法可以提供定量的结果，并建议在未来的方法，以更具挑战性的多元素分析类似的20个主要元素在高燃耗核反应堆燃料。(C)2015 Elsevier B.V.版权所有。
A study of the optical emission as a function of concentration of laser-ablated yttrium (Y) and of six rare earth elements, europium (Eu), gadolinium (Gd), lanthanum (La), praseodymium (Pr), neodymium (Nd), and samarium (Sm), has been evaluated using the laser-induced breakdown spectroscopy (LIBS) technique. Statistical methodology using multivariate analysis has been used to obtain the sampling errors, coefficient of regression, calibration, and cross-validation of measurements as they relate to the LIBS analysis in graphite-matrix pellets that were doped with elements at several concentrations. Each element (in oxide form) was mixed in the graphite matrix in percentages ranging from 1% to 50% by weight and the LIBS spectra obtained for each composition as well as for pure oxide samples. Finally, a single pellet was mixed with all the elements in equal oxide masses to determine if we can identify the elemental peaks in a mixed pellet This dataset is relevant for future application to studies of fission product content and distribution in irradiated nuclear fuels. These results demonstrate that LIBS technique is inherently well suited for the future challenge of in situ analysis of nuclear materials. These studies also show that LIBS spectral analysis using statistical methodology can provide quantitative results and suggest an approach in future to the far more challenging multielemental analysis of similar to 20 primary elements in high-bumup nuclear reactor fuel. (C) 2015 Elsevier B.V. All rights reserved.