Fig. 1 (A) Tetramethylammonium hydroxide (TMAH) thermochemolysis–gas chromatography/mass spectrometry chromatogram of 0- to 7.5-cm soil layer, and (B) 7.5–15 cm soil layer. For peak identification refer to Table 1
Fig. 1 (A) Tetramethylammonium hydroxide (TMAH) thermochemolysis–gas chromatography/mass spectrometry chromatogram of 0- to 7.5-cm soil layer, and (B) 7.5–15 cm soil layer. For peak identification refer to Table 1