Abstract
This paper presents the findings of an investigation into the effects of pressure and temperature variations on methane concentrations measurements in near-infrared spectrum. A wavelength band was found where the spectral absorbance of methane is free from the interference of other common mine gases. The pressure and temperature variations that are expected in underground coal mines were found to have negligible effects on the uncertainty of spectroscopic measurement of methane concentration.
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Shemshad, J., Aminossadati, S.M., Bowen, W.P. et al. Effects of pressure and temperature fluctuations on near-infrared measurements of methane in underground coal mines. Appl. Phys. B 106, 979–986 (2012). https://doi.org/10.1007/s00340-011-4801-z
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DOI: https://doi.org/10.1007/s00340-011-4801-z