SSSAJ -- Jara et al. 70 (2): 337 Figure IG1

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Fig. 1. Adsorption isotherms of (a) phosphate (PO₄), oxalate (OX), citrate (CIT), and sulfate (SO₄) on AlSiFe at pH 5.5 and (b) PO₄, OX, and SO₄ on Andisol at pH 5.0, ionic strength 0.1 mol L^–1 KCl and 25°C.