Improvements in quantitative analysis of steel composition by laser-induced breakdown spectroscopy at atmospheric pressure using an infrared Nd:YAG laser
Improvements in quantitative analysis of steel composition by laser-induced breakdown spectroscopy at atmospheric pressure using an infrared Nd:YAG laser
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DOI：
10.1366/0003702991945506
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发表时间：
1999-10-01
影响因子：
3.5
通讯作者：
Peñalba, F
中科院分区：
文献类型：
--
作者：
Aragón, C;Aguilera, JA;Peñalba, F
本文研究了用红外Nd：YAG激光器在常压氩气中对钢进行激光诱导击穿光谱定量分析的实验条件和方法。用于低合金钢中C、Si、Cr、Ni含量的测定，获得了满意的结果。透镜到样品的距离被示出为是一个相关的参数，其可以被选择在每个脉冲能量，以提高线强度和测量的可重复性。与绝对强度测量相比，线强度比（浓度高于0.1%时的相对标准偏差为0.9-2.5%）获得了更高的精度。所有元素的校准曲线的相关系数均在0.999以上。检测限在6-80 ppm范围内。
The experimental conditions and procedure for quantitative analysis of steel by laser-induced breakdown spectroscopy in argon at atmospheric pressure using an infrared Nd:YAG laser have been studied. Satisfactory analytical results have been obtained for the determination of C, Si, Cr, and Ni contents in low-alloyed steels. The lens-to-sample distance is shown to be a relevant parameter, which can be selected at each pulse energy to enhance the line intensities and the repeatability of measurements. A higher precision has been obtained for line-intensity ratios (0.9-2.5% relative standard deviation for concentrations higher than 0.1%) than for absolute intensity measurements. The calibration curves for all the elements have correlation coefficients above 0.999. Detection limits are in the range 6-80 ppm.