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Showing 1 to 1 of 1 for “"Humates -- Spectra."”.
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NMR STRUCTURAL INVESTIGATIONS OF AQUATIC HUMIC SUBSTANCES (PYRAZOLINE, 1,3-DIPOLAR ADDITION, NITROGEN-15).
… OH adjacent to two substituents. The ¹³C NMR spectra of permethylated samples shows that a significant amount of the hydroxyl group functionality can be methylated only when a strong base is used. The sources of the aquatic humic substances investigated included groundwater, lake, bog, and …