Assertion: crude lignin | /r/HasProperty | characterized by fourier
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Source sentences:
text: The separated acid and evaporative precipitate, as crude lignin separated by AT and RVET from PHL, respectively, were compared and characterized by Fourier transform infrared spectroscopy (FTIR), 1H-NMR spectroscopy, thermogravimetric analysis (TGA), and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS).