Laser ablation inductively coupled plasma mass spectrometry of pressed pellet surrogates for Pu materials disposition
Laser ablation inductively coupled plasma mass spectrometry of pressed pellet surrogates for Pu materials disposition
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DOI：
10.1366/0003702011953658
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发表时间：
2001-10-01
影响因子：
3.5
通讯作者：
Russo, RE
中科院分区：
文献类型：
--
作者：
Borisov, OV;Bannochie, CJ;Russo, RE
通过以玻璃或陶瓷形式固定化来成功处理 Pu 需要准确且精确地了解杂质含量。通过常规液体雾化分析 Pu 材料需要溶解，由于样品的难熔性质，这很困难。激光烧蚀是一种适合直接分析固体的采样技术。本文演示了使用激光烧蚀电感耦合等离子体质谱仪 (ICP-MS) 进行 PuO2 分析的程序。使用 CeO2 制备的压制颗粒来模拟 PuO2。研究了激光条件、样品制备和基质成分（特别是基质元素的质量和颜色）对 CeO2、Bi2O3 和 PtO2 基压制颗粒分析的影响。研究了混合/研磨时间对粒径、样品均匀性和烧蚀效率的影响。检查了产生化学计量采样的激光条件。
Successful Pu disposition by immobilization in glass or ceramic form requires accurate and precise knowledge of impurity amounts. Analysis of Pu material by conventional liquid nebulization requires dissolution, which is difficult due to the refractory nature of the samples. Laser ablation is a suitable sampling technique for direct analysis of solids. This paper demonstrates the procedures that were established for PuO2 analysis using laser ablation inductively coupled plasma mass spectrometer (ICP-MS). Pressed pellets prepared from CeO2 were used to simulate PuO2. Effects of laser conditions, sample preparation, and matrix composition, specifically mass of a matrix element and color, on the analyses of CeO2, Bi2O3, and PtO2 based pressed pellets were examined. Influence of mixing/grinding time on particle sizes, sample homogeneity, and ablation efficiency were investigated. Laser conditions that produce stoichiometric sampling were examined.