Application of ICP-QMS for the determination of plutonium in environmental samples for safeguards purposes

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• 作者：Maria Luiza D.P. Godoy ; Jos&#xe9 ; Marcus Godoy ; Luiz Alfredo Rold&#xe3 ; o
• 关键词：ICP-MS ; Safeguards ; Plutonium ; Isotope dilution ; Isotope ratio ; Environmental samples
• 刊名：Journal of Environmental Radioactivity
• 出版年：2007
• 期刊代码：45_0265931x
• 类别：env
• 出版时间：October 2007
• 卷：97
• 期：2-3
• 页码：124-136
• 文件大小：258 K

摘要

Aiming to determine the plutonium amount as well as its isotopic composition, in particular, in swipe samples for safeguards purposes, an analytical method was developed with a plutonium separation step based on extraction chromatography using 2 cm TEVA columns and detection with quadrupole ICP-MS applying an ultra-sonic nebulizer coupled with membrane desolvation system. The method was successfully applied to New Brunswick plutonium certified reference materials as well as to Lawrence Livermore National Laboratory round robin samples, based on the round robin samples provided by the Institute for Reference Materials and Measurements (Belgium), as part of the Regular European Interlaboratory Measurement Evaluation Programme (REIMEP), campaign 16 (isotopic abundances of plutonium in plutonium nitrate samples), with a total plutonium amount between 1 and 0.25 ng per sample. After the introduction of an additional separation step, it was also possible to carry out precise and accurate total plutonium, p>240p>Pu/p>239p>Pu, p>241p>Pu/p>239p>Pu and p>242p>Pu/p>239p>Pu atom ratios determination in sediment sample showing its applicability to environmental samples in general, reaching a detection limit equivalent to 5 mBq p>239p>Pu kgp>−1p>.