Retention of AfB1 from corn meal by all samples was much less (b1.5 g/kg) than from water and suggests that methanol might remove weakly-adsorbed AfB1. Low-charge montmorillonites, Novasil and SWy-2, retained ∼0.7 g AfB1/kg from corn meal, but high-charge montmorillonite (SAz-1) and AC only retained ∼0.1 g/kg. SepSp-1 adsorbed less AfB1 from water than AC or montmorillonite, but retained more AfB1 (1.3 g/kg) from corn meal at a lower equilibrium concentration.