The effect of sample surface roughness on the microanalysis of microchip laser-induced breakdown spectroscopy,Journal of Analytical Atomic Spectrometry

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The effect of sample surface roughness on the microanalysis of microchip laser-induced breakdown spectroscopy
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2019/12/17 , DOI: 10.1039/c9ja00377k
Wei Wang _{1,

2,

3,

4,

5} , Lanxiang Sun _{1,

2,

3,

4,

5} , Guodong Wang _{1,

2,

3,

4,

5} , Peng Zhang _{1,

2,

3,

4,

5} , Lifeng Qi _{1,

2,

3,

4,

5} , Liming Zheng _{1,

2,

3,

4,

5} , Wei Dong _{1,

2,

3,

4,

5}

Affiliation

In the microanalysis of laser-induced breakdown spectroscopy, the influence of surface roughness on spectral stability and quantitative analysis capability was studied for the first time when the laser ablation crater diameter was approximately 10 μm. By using a microchip laser, the spectra were acquired on a set of carbon steel samples, whose roughness changed from 0.0392 μm to 0.5248 μm. Besides, the study found that the surface roughness of the sample neglected the effect on spectral stability via screening and analyzing the spectral data when the sample stage moved at a constant speed. Moreover, when the spectral collection was performed with the ablation crater overlap rate of approximately 75% and Fe line was used as the internal standard, the effect of sample surface roughness on the quantitative analysis of the spectrum was negligible, and the resulting calculated determination coefficients of the Mn, Si, Ni, V, Cr, and Cu elements all exceeded 0.993.

中文翻译：

样品表面粗糙度对微芯片激光诱导击穿光谱微分析的影响

在激光诱导击穿光谱的微观分析中，首次研究了当激光烧蚀坑口直径约为10μm时表面粗糙度对光谱稳定性和定量分析能力的影响。通过使用微芯片激光器，在一组碳钢样品上获得了光谱，这些碳钢样品的粗糙度从0.0392μm变为0.5248μm。此外，研究发现样品的表面粗糙度忽略了通过光谱对光谱稳定性的影响。当样品台以恒定速度移动时，筛选和分析光谱数据。此外，当以大约75％的烧蚀坑口重叠率进行光谱收集并使用Fe线作为内标时，样品表面粗糙度对光谱定量分析的影响可忽略不计，所得的计算确定系数Mn，Si，Ni，V，Cr和Cu元素的含量均超过0.993。

更新日期：2020-02-13

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