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The Review of Nuclear Microscopy Techniques: An Approach for Nondestructive Trace Elemental Analysis and Mapping of Biological Materials

机译:核显微镜技术的回顾:一种非破坏性痕量元素分析和生物材料图谱的方法

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摘要

The properties of many biological materials often depend on the spatial distribution and concentration of the trace elements present in a matrix. Scientists have over the years tried various techniques including classical physical and chemical analyzing techniques each with relative level of accuracy. However, with the development of spatially sensitive submicron beams, the nuclear microprobe techniques using focused proton beams for the elemental analysis of biological materials have yielded significant success. In this paper, the basic principles of the commonly used microprobe techniques of STIM, RBS, and PIXE for trace elemental analysis are discussed. The details for sample preparation, the detection, and data collection and analysis are discussed. Finally, an application of the techniques to analysis of corn roots for elemental distribution and concentration is presented.
机译:许多生物材料的特性通常取决于基质中存在的微量元素的空间分布和浓度。多年来,科学家们尝试了各种技术,包括经典的物理和化学分析技术,每种技术都具有相对的准确性。然而,随着对空间敏感的亚微米束的发展,使用聚焦质子束对生物材料进行元素分析的核微探针技术取得了巨大的成功。本文讨论了常用的STIM,RBS和PIXE微探针技术进行痕量元素分析的基本原理。讨论了样品制备,检测以及数据收集和分析的详细信息。最后,介绍了该技术在分析玉米根中元素分布和浓度方面的应用。

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