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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 9 — May. 5, 2014
  • pp: 10233–10238

Accuracy improvement of quantitative analysis in laser-induced breakdown spectroscopy using modified wavelet transform

X. H. Zou, L. B. Guo, M. Shen, X. Y. Li, Z. Q. Hao, Q. D. Zeng, Y. F. Lu, Z. M. Wang, and X. Y. Zeng  »View Author Affiliations


Optics Express, Vol. 22, Issue 9, pp. 10233-10238 (2014)
http://dx.doi.org/10.1364/OE.22.010233


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Abstract

A modified algorithm of background removal based on wavelet transform was developed for spectrum correction in laser-induced breakdown spectroscopy (LIBS). The optimal type of wavelet function, decomposition level and scaling factor γ were determined by the root-mean-square error of calibration (RMSEC) of the univariate regression model of the analysis element, which is considered as the optimization criteria. After background removal by this modified algorithm with RMSEC, the root-mean-square error of cross-validation (RMSECV) and the average relative error (ARE) criteria, the accuracy of quantitative analysis on chromium (Cr), vanadium (V), cuprum (Cu), and manganese (Mn) in the low alloy steel was all improved significantly. The results demonstrated that the algorithm developed is an effective pretreatment method in LIBS to significantly improve the accuracy in the quantitative analysis.

© 2014 Optical Society of America

OCIS Codes
(100.7410) Image processing : Wavelets
(160.3900) Materials : Metals
(300.6365) Spectroscopy : Spectroscopy, laser induced breakdown

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: March 3, 2014
Revised Manuscript: April 11, 2014
Manuscript Accepted: April 14, 2014
Published: April 21, 2014

Citation
X. H. Zou, L. B. Guo, M. Shen, X. Y. Li, Z. Q. Hao, Q. D. Zeng, Y. F. Lu, Z. M. Wang, and X. Y. Zeng, "Accuracy improvement of quantitative analysis in laser-induced breakdown spectroscopy using modified wavelet transform," Opt. Express 22, 10233-10238 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-9-10233


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