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Correction of self-absorption effect in calibration-free laser-induced breakdown spectroscopy by an internal reference method
Sun LX(孙兰香); Yu HB(于海斌)
作者部门工业信息学研究室
关键词Libs Self-absorption Internal Reference Calibration-free Quantitative Analysis Boltzmann Plot
发表期刊Talanta
ISSN0039-9140
2009
卷号79期号:2页码:388-395
收录类别SCI ; EI
EI收录号20092612154067
WOS记录号WOS:000268216900044
产权排序1
摘要A simplified procedure for correcting self-absorption effect was proposed in calibration-free laser-induced breakdown spectroscopy (CF-LIBS). In typical LIBS measurement conditions, the plasma produced is often optically thick, especially for the strong lines of major elements. The selection of self-absorption lines destroys the performance of CF-LIBS, and the familiar correction method based on the curve of growth is complex in implementation. The procedure we proposed, named internal reference for self-absorption correction (IRSAC), first chose an internal reference line for each species, then compared other spectral line intensity of the same species with the reference line to estimate the self-absorption degrees of other spectral lines, and finally achieved an optimal correction by a regressive algorithm. The self-absorption effect of the selected reference line can be ignored, since the reference line with high excitation energy of the upper level is slightly affected by the self-absorption. Through the IRSAC method, the points on the Boltzmann plot become more regular, and the evaluations of the plasma temperature and material composition are more accurate than the basic CF-LIBS.
语种英语
WOS标题词Science & Technology ; Physical Sciences
WOS类目Chemistry, Analytical
关键词[WOS]QUANTITATIVE ELEMENTAL ANALYSIS ; INDUCED PLASMA SPECTROSCOPY ; STEEL ; SPECTROMETRY ; TECHNOLOGY ; MATRIX ; WATER ; MELTS
WOS研究方向Chemistry
引用统计
文献类型期刊论文
条目标识符http://ir.sia.cn/handle/173321/7069
专题工业信息学研究室
通讯作者Yu HB(于海斌)
作者单位1.Key Laboratory of Industrial Informatics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
2.Graduate School, the Chinese Academy of Sciences, Beijing, 100039, China
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GB/T 7714
Sun LX,Yu HB. Correction of self-absorption effect in calibration-free laser-induced breakdown spectroscopy by an internal reference method[J]. Talanta,2009,79(2):388-395.
APA Sun LX,&Yu HB.(2009).Correction of self-absorption effect in calibration-free laser-induced breakdown spectroscopy by an internal reference method.Talanta,79(2),388-395.
MLA Sun LX,et al."Correction of self-absorption effect in calibration-free laser-induced breakdown spectroscopy by an internal reference method".Talanta 79.2(2009):388-395.
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