Research on Accurate Measurement of Oxygen Content in Coal Using Laser-Induced Breakdown Spectroscopy in Air Environment
YIN Wang-bao, ZHANG Lei*, WANG Le, DONG Lei, MA Wei-guang, JIA Suo-tang
College of Physics and Electronics Engineering, Shanxi University, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Taiyuan 030006, China
Abstract:A technique about accurate measurement of oxygen content in coal in air environment using laser-induced breakdown spectroscopy (LIBS) is introduced in the present paper. Coal samples were excited by the laser, and plasma spectra were obtained. Combining internal standard method, temperature correction method and multi-line methods, the oxygen content of coal samples was precisely measured. The measurement precision is not less than 1.37% for oxygen content in coal analysis, so is satisfied for the requirement of coal-fired power plants in coal analysis. This method can be used in surveying, environmental protection, medicine, materials, archaeological and food safety, biochemical and metallurgy application.
Key words:LIBS;Coal analysis;Oxygen content in coal
尹王保,张 雷*,王 乐,董 磊,马维光,贾锁堂 . 空气环境下基于LIBS煤中氧含量分析研究[J]. 光谱学与光谱分析, 2012, 32(01): 200-203.
YIN Wang-bao, ZHANG Lei*, WANG Le, DONG Lei, MA Wei-guang, JIA Suo-tang . Research on Accurate Measurement of Oxygen Content in Coal Using Laser-Induced Breakdown Spectroscopy in Air Environment. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(01): 200-203.
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