Laser-Induced Breakdown Spectroscopy for Determination of the Organic Oxygen Content in Anthracite Coal Under Atmospheric Conditions

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Abstract:

Laser-induced breakdown spectroscopy has been used to measure the organic oxygen content in pulverized anthracite coal under atmospheric conditions. Special spectral processing including the optimal O(I) emission-line selection by comparing the spectral correlation coefficients with the N(I) line, internal normalization with the N(I) line, and temperature correction are proposed and employed to satisfy the multi-line analysis method and yield the most accurate quantitative results. The calibration method for determining the organic oxygen content of coal is presented, with an accuracy of 1.15–1.37% and an average relative error of 19.39% being evaluated through an experiment performed on six anthracite coal samples. The relative measurement error distribution has also been studied.

Keywords: COAL; LASER-INDUCED BREAKDOWN SPECTROSCOPY; LIBS; MULTI-LINE ANALYSIS METHOD; ORGANIC OXYGEN; RELATION COEFFICIENT; TEMPERATURE CORRECTION

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370208784046786

Affiliations: State Key Laboratory of Quantum Optics and Quantum Optics Devices, College of Physics and Electronics Engineering, Shanxi University, Taiyuan 030006, P.R. China

Publication date: April 1, 2008

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