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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)
Department工业信息学研究室
Source PublicationTalanta
ISSN0039-9140
2009
Volume79Issue:2Pages:388-395
Indexed BySCI ; EI
EI Accession number20092612154067
WOS IDWOS:000268216900044
Contribution Rank1
KeywordLibs Self-absorption Internal Reference Calibration-free Quantitative Analysis Boltzmann Plot
AbstractA 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.
Language英语
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Analytical
WOS KeywordQUANTITATIVE ELEMENTAL ANALYSIS ; INDUCED PLASMA SPECTROSCOPY ; STEEL ; SPECTROMETRY ; TECHNOLOGY ; MATRIX ; WATER ; MELTS
WOS Research AreaChemistry
Citation statistics
Cited Times:96[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/7069
Collection工业信息学研究室
Corresponding AuthorYu HB(于海斌)
Affiliation1.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
Recommended Citation
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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