Silicon determination in steel with molecular emission using laser-induced breakdown spectroscopy combined with laser-induced molecular fluorescence,Journal of Analytical Atomic Spectrometry

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Silicon determination in steel with molecular emission using laser-induced breakdown spectroscopy combined with laser-induced molecular fluorescence
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2020-12-8 , DOI: 10.1039/d0ja00427h
Wen Zhang _{1,

2,

3,

4} , Ran Zhou _{1,

2,

3,

4} , Kun Liu _{1,

2,

3,

4} , Qingzhou Li _{1,

2,

3,

4} , Zhiyang Tang _{1,

2,

3,

4} , Chenwei Zhu _{1,

2,

3,

4} , Xiangyou Li _{1,

2,

3,

4} , Xiaoyan Zeng _{1,

2,

3,

4} , Chao He _{1,

2,

3,

4}

Affiliation

Silicon is an essential element for industry, but it is hard to accurately and rapidly determine a high silicon content with conventional laser-induced breakdown spectroscopy (LIBS), due to the matrix and self-absorption effect. Using molecular emission is an alternative method for silicon content analysis, but its weak spectra are major challenges. In this work, silicon monoxide (SiO) molecules were used to establish calibration assisted by LIBS and laser-induced molecular fluorescence (LIBS-LIMF). Two types of SiO molecular excitations, vibrational ground state excitation (LIMFG) and vibrational excited state excitation (LIMFE), were compared. The results showed that LIMFE eliminated the self-absorption effect and achieved better sensitivity. This work demonstrates LIBS-LIMF as a capable and potential approach for fast determining the silicon element in steel industries.

中文翻译：

激光诱导击穿光谱结合激光诱导分子荧光测定分子发射钢中的硅

硅是工业上必不可少的元素，但是由于基体和自吸收效应，很难用常规的激光诱导击穿光谱法（LIBS）准确，快速地确定高硅含量。使用分子发射是硅含量分析的另一种方法，但是其弱光谱是主要挑战。在这项工作中，一氧化硅（SiO）分子用于通过LIBS和激光诱导的分子荧光（LIBS-LIMF）辅助建立校准。比较了两种类型的SiO分子激发，即振动基态激发（LIMFG）和振动激发态激发（LIMFE）。结果表明，LIMFE消除了自吸收作用，并获得了更好的灵敏度。

更新日期：2020-12-23

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