Department of Chemistry, University of Bari , Via Orabona 4, 70126 Bari, Italy.
Anal Chem. 2013 Nov 5;85(21):10180-7. doi: 10.1021/ac4016165. Epub 2013 Oct 21.
In this article, an increase of 1-2 orders of magnitude in laser-induced breakdown spectroscopy (LIBS) signals was obtained by depositing silver nanoparticles on metal samples. Nanoparticle-enhanced LIBS (NELIBS) was found to be a robust and flexible tool for the chemical analysis of metals because the sample emission signal did not appear to be affected much by the size and concentration of deposited nanoparticles (NPs) within the ranges of 10 nm for diameter and 1 order of magnitude for concentration. On the other hand, preliminary NELIBS tests on insulators and semiconductors did not show any significant enhancement with respect to conventional LIBS. In this article, we present a detailed investigation of the fundamental features of NELIBS spectra, in addition to some examples of analytical applications to the quantitative analysis of metal alloys.
本文通过在金属样品上沉积银纳米粒子，将激光诱导击穿光谱（LIBS）信号提高了 1-2 个数量级。纳米粒子增强 LIBS（NELIBS）被发现是一种强大而灵活的金属化学分析工具，因为在直径为 10nm 且浓度为 1 数量级的范围内，样品发射信号似乎不会受到沉积纳米粒子（NPs）的大小和浓度的太大影响。另一方面，对绝缘体和半导体的初步 NELIBS 测试并未显示出与常规 LIBS 相比有任何显著增强。本文除了介绍一些金属合金定量分析的应用实例外，还详细研究了 NELIBS 光谱的基本特征。
