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Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 62,
  • Issue 4,
  • pp. 458-463
  • (2008)

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>I</i>) emission-line selection by comparing the spectral correlation coefficients with the N(<i>I</i>) line, internal normalization with the N(<i>I</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.

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