激光诱导击穿光谱分析污染核电厂用钢。
Analysis of contaminated nuclear plant steel by laser-induced breakdown spectroscopy.
机构信息
Centre for Radiochemistry Research, School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom; Corrosion and Protection Centre, Materials Performance Centre, School of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom.
Corrosion and Protection Centre, Materials Performance Centre, School of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom.
出版信息
J Hazard Mater. 2018 Mar 5;345:114-122. doi: 10.1016/j.jhazmat.2017.10.064. Epub 2017 Nov 7.
Laser Induced Breakdown Spectroscopy (LIBS) has the potential to allow direct, standoff measurement of contaminants on nuclear plant. Here, LIBS is evaluated as an analytical tool for measurement of Sr and Cs contamination on type 304 stainless steel surfaces. Samples were reacted in model acidic (PUREX reprocessing) and alkaline (spent fuel ponds) Sr and Cs bearing liquors, with LIBS multi-pulse ablation also explored to measure contaminant penetration. The Sr II (407.77nm) and Cs I (894.35nm) emission lines could be separated from the bulk emission spectra, though only Sr could be reliably detected at surface loadings >0.5mgcm. Depth profiling showed decay of the Sr signal with time, but importantly, elemental analysis indicated that material expelled from LIBS craters is redistributed and may interfere in later laser shot analyses.
激光诱导击穿光谱（LIBS）有可能实现对核电厂污染物的直接远距离测量。在此，LIBS 被评估为一种分析工具，用于测量 304 型不锈钢表面的 Sr 和 Cs 污染。样品在模拟酸性（PUREX 后处理）和碱性（乏燃料池）含 Sr 和 Cs 的液体中进行反应，还探索了 LIBS 多脉冲烧蚀来测量污染物的渗透。可以从基体发射光谱中分离出 Sr II（407.77nm）和 Cs I（894.35nm）发射线，但是只有在表面负载>0.5mgcm 时才能可靠地检测到 Sr。深度剖析显示 Sr 信号随时间衰减，但重要的是，元素分析表明，从 LIBS 弹坑中喷出的物质重新分布，可能会干扰后续激光射击分析。
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