Revisiting the fission track method for the analysis of particles in safeguards environmental samples.
Talanta(2017)
摘要
This paper details an improved approach to environmental particle analysis for safeguards by means of a combination of an upgraded version of the so-called fission track method with state-of-the-art microscope and microprobe techniques. Improvements to the fission track method comprise a novel sample assembly, the automation of several of its steps and the extensive use of correlative microscopy. This is followed by an automated isolation of particles-of-interest by means of laser micro-dissection (LMD) and their collection onto a harvester for transfer to other micro-analytical instruments for further analysis. The samples examined in this contribution were analysed for their nuclear material signatures, in particular the presence of uranium isotopes. The length of a single analysis cycle herewith was reduced to 12 days.
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关键词
Fission track,Correlative microscopy,Safeguards,LMD,LA-ICP-MS,Environmental swipe samples
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