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Proceedings Paper

Quantitative analysis of multi-elements in steel samples by laser-induced breakdown spectroscopy
Author(s): Lan-xiang Sun; Hai-bin Yu
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Paper Abstract

Through a Nd:YAG pulse laser of 1064nm wavelength, a multichannel grating spectrometer, and seven CCD detectors, the plasma emission spectrum of the 200 - 980nm wavelength rang were simultaneously observed. First, we studied the influences of some factors like laser energy and measurement time delays on emission intensity of plasma. By experiments, we found that the unusual phenomenon that the emission intensity of plasma is possibly stronger when laser energy is smaller for steel samples. However, this stronger intensity obtained under smaller laser energy is not suitable to quantitative analysis because of poorer repetition. Second, we determined the optimal experimental parameters and quantitatively analyzed the concentrations of the element Mn, Ni, Cr, V, Ti and Cu in some steel samples under the optimal experimental parameters. The calibration curves of these elements were built, and good linearity was obtained. The average relative errors of the quantitative results of these elements are between 13.31% and 4.54%. Consequently, LIBS can be used for quantitative analysis for steel samples; however, the accuracy of the quantitative results still needs to be improved.

Paper Details

Date Published: 28 August 2009
PDF: 8 pages
Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 738224 (28 August 2009); doi: 10.1117/12.831208
Show Author Affiliations
Lan-xiang Sun, Shenyang Institute of Automation (China)
Graduate School of the Chinese Academy of Sciences (China)
Hai-bin Yu, Shenyang Institute of Automation (China)

Published in SPIE Proceedings Vol. 7382:
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging
Farzin Amzajerdian; Chun-qing Gao; Tian-yu Xie, Editor(s)

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