Comment: |
2.5 g clay were eliquibrated with 25 mL 5.0 g B/m^-3 Solution (I = 0.001-1 M NaCl), pH-setting with 1 M HCl/NaOH, Centrifugation with 7800 g for 20 min, decantates analyzed for pH and B with the azomethine-H method according to Bingham F.T. Boron. P 431-447 in: Page et al. (ed.) "Methods of soil analysis" Part 2. 2nd Ed. Agron. Monogr. 9. ASA and SSSA, Madison, WI., Values for the Site Protolysis Reference are average Values for a- & g-Al2O3 according to [GS84a] |