Fig. 5
From: Characterizing the phosphorus forms extracted from soil by the Mehlich III soil test
Enhanced orthophosphate monoester region of P-NMR spectra of whole soil samples extracted with NaOH-EDTA. Spectra are processed with 2 Hz line-broadening, and are scaled to the tallest peak in the M2 region. A1 and A2, chiro-inositol hexaphosphate (IHP) in the 4-equatorial, 2-axial 4-axial, 2-equatorial conformations, respectively; B, neo-IHP; C, myo-IHP; D, scyllo-IHP; E, α-glycerophosphate; F, β-glycerophosphate; G, choline phosphate; H, unidentified peak at 5 ppm. Note that not all peaks are labelled in all spectra in the figure