Fig. 3. Tetramethylammonium hydroxide (TMAH) thermochemolysis-GC/MS chromatograms of humic acids (HAs) from (a) >250 µm, and (b) <2 µm soil aggregate-size fractions. For peak identification see Table 2.
Fig. 3. Tetramethylammonium hydroxide (TMAH) thermochemolysis-GC/MS chromatograms of humic acids (HAs) from (a) >250 µm, and (b) <2 µm soil aggregate-size fractions. For peak identification see Table 2.