光谱学与光谱分析 |
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Determination of Minor Elements in Stainless Steel by Laser-Induced Plasma Spectroscopy(LIPS) |
LI Jing1,ZHAI Chao1,ZHANG Shi-ding2,ZHANG Jian-qiu1,MENG Xiang-ru1 |
1. Photoelectric Lab, Department of Precision Machinery and Precision Instrument, University of Science and Technology of China, Hefei 230027, China 2. Experiment Center of Physics and Chemistry, University of Science and Technology of China, Hefei 230026, China |
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Abstract Laser-induced plasma spectroscopy (LIPS) is characterized by its non-contact and real-time analysis. Its application to the determination of steel composition can meet the need of high-speed, continuous and automatic production in large steel companies. In the present article the minor elements concentrations of aluminum, manganese, cobalt, molybdenum, and titanium in a series of stainless steel 1Cr18Ni9Ti samples were determinate by laser-induced plasma spectroscopy, based on a Nd∶YAG Q-switched solid laser with wavelength 1 064 nm as an exciting source and ICCD as detector. In the experiment the working delay time and gate time of ICCD were set suitably to get high signal-to-noise ratio emission spectral lines, and the internal standardization method related to matrix effect was used to deal with spectral data. Experiment results show that the concentration ratios of all the measured elements versus the reference element ferrum have a good linear relationship with the intensity ratios of them, the detection limits of the five tested elements are within 150 μg·g-1.
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Received: 2006-05-10
Accepted: 2006-08-20
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Corresponding Authors:
LI Jing
E-mail: lijing@ustc.edu.cn
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