激光诱导击穿光谱元素测绘的方法和应用。

Methodology and applications of elemental mapping by laser induced breakdown spectroscopy.

机构信息

TU Wien, Institute of Chemical Technologies and Analytics, Technische Universität Wien, Getreidemarkt 9/164, 1060, Vienna, Austria.

TU Wien, Institute of Chemical Technologies and Analytics, Technische Universität Wien, Getreidemarkt 9/164, 1060, Vienna, Austria.

出版信息

Anal Chim Acta. 2021 Feb 22;1147:72-98. doi: 10.1016/j.aca.2020.12.054. Epub 2020 Dec 30.

Abstract

In the last few years, LIBS has become an established technique for the assessment of elemental concentrations in various sample types. However, for many applications knowledge about the overall elemental composition is not sufficient. In addition, detailed information about the elemental distribution within a heterogeneous sample is needed. LIBS has become of great interest in elemental imaging studies, since this technique allows to associate the obtained elemental composition information with the spatial coordinates of the investigated sample. The possibility of simultaneous multi-elemental analysis of major, minor, and trace constituents in almost all types of solid materials with no or negligible sample preparation combined with a high speed of analysis are benefits which make LIBS especially attractive when compared to other elemental imaging techniques. The first part of this review is aimed at providing information about the instrumental requirements necessary for successful LIBS imaging measurements and points out and discusses state-of-the-art LIBS instrumentation and upcoming developments. The second part is dedicated to data processing and evaluation of LIBS imaging data. This chapter is focused on different approaches of multivariate data evaluation and chemometrics which can be used e.g. for classification but also for the quantification of obtained LIBS imaging data. In the final part, current literature of different LIBS imaging applications ranging from bioimaging, geoscientific and cultural heritage studies to the field of materials science is summarized and reviewed.

摘要

在过去的几年中,LIBS 已经成为评估各种样品类型中元素浓度的一种成熟技术。然而,对于许多应用,仅仅了解总体元素组成是不够的。此外,还需要关于异质样品中元素分布的详细信息。LIBS 在元素成像研究中变得非常有趣,因为该技术可以将获得的元素组成信息与所研究样品的空间坐标相关联。与其他元素成像技术相比,LIBS 具有无需或几乎无需样品制备且能同时分析主要、次要和痕量元素的优势,而且分析速度快。本综述的第一部分旨在提供有关成功进行 LIBS 成像测量所需的仪器要求的信息,并指出和讨论了最先进的 LIBS 仪器设备和即将出现的发展。第二部分专门用于 LIBS 成像数据的处理和评估。这一章的重点是多元数据分析和化学计量学的不同方法,这些方法可用于分类,也可用于定量获得的 LIBS 成像数据。在最后一部分,总结和回顾了不同 LIBS 成像应用的当前文献,涵盖了从生物成像、地球科学和文化遗产研究到材料科学领域的应用。

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