9Parida S K, Mishra B K. Adsorption of styryl pyridinium dyes on silica gel[J]. Journal of Colloid and Interface Science, 1996,182 (2) :473 -477.
10Harris R G, Wells J D ,Johnson B B. Selective adsorption of dyes and other organic molecules to kaolinite and oxide surfaces [ J] Colloids and Surface A : Physicochemical and Engineering Aspects 2001,180( 1 ) : 131 - 140.