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Chemical state and isotope ratio analysis of individual uranium particles by a combination of micro-Raman spectroscopy and secondary ion mass spectrometry
Analytical Methods ( IF 3.1 ) Pub Date : 2017-10-11 00:00:00 , DOI: 10.1039/c7ay01815k
T. Yomogida 1, 2, 3, 4 , F. Esaka 1, 2, 3, 4 , M. Magara 1, 2, 3, 4
Affiliation  

An analytical procedure using micro-Raman spectroscopy (MRS) and secondary ion mass spectrometry (SIMS) was developed to elucidate both the chemical states and isotope ratios of individual micron-sized uranium particles. Each uranium particle was identified by scanning electron microscopy combined with energy dispersive X-ray detection and transferred onto each specific location on a substrate by micro-manipulation. After optimization of the analytical conditions, the chemical states of each uranium particle were determined with MRS non-destructively. The substrate containing each particle was then introduced into a SIMS instrument and uranium isotope ratios of each particle were determined. The developed method is expected to be used for clarifying the origin and history of each particle in environmental samples.

中文翻译:

结合拉曼光谱和二次离子质谱法分析单个铀颗粒的化学状态和同位素比

开发了使用微拉曼光谱(MRS)和二次离子质谱(SIMS)的分析程序,以阐明单个微米级铀颗粒的化学状态和同位素比。通过扫描电子显微镜与能量色散X射线检测相结合来识别每个铀粒子,并通过微操作将其转移到基板上的每个特定位置。优化分析条件后,使用MRS无损测定了每个铀颗粒的化学状态。然后将包含每个颗粒的基质引入SIMS仪器中,并确定每个颗粒的铀同位素比。预期该开发的方法将用于澄清环境样品中每个颗粒的起源和历史。
更新日期:2017-11-16
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