光谱学与光谱分析 |
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Simultaneous Quantitative Analysis of Multielements in Al Alloy Samples by Laser-Induced Breakdown Spectroscopy |
SUN Lan-xiang1, 2, YU Hai-bin1* |
1. Key Laboratory of Industrial Informatics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract The multielement components of some aluminium alloy samples were quantified by using laser-induced breakdown spectroscopy (LIBS). The Nd∶YAG pulsed laser was used to produce plasma in ambient air. The spectral range of 200-980 nm was simultaneously obtained through a multichannel grating spectrometer and CCD detectors. The authors studied the influences of time delays, energy of the laser, and depth profile of elements in samples on spectral intensity, and optimized the experimental parameters based on the influence analysis. With the optimal experimental parameters, the authors made the calibration curves by four certified aluminum alloy samples for eight elements, Si, Fe, Cu, Mn, Mg, Zn, Sn, and Ni, and quantified the composition of an aluminum sample. The obtained maximum relative standard deviation (RSD) was 5.89%, and relative errors were -20.99%-15%. Experimental results show that LIBS is an effective technique for quantitative analysis of aluminum alloy samples, though the improved accuracy of the quantitative analysis is necessary.
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Received: 2008-05-16
Accepted: 2008-08-18
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Corresponding Authors:
YU Hai-bin
E-mail: yhb@sia.cn
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