张昱
5.8, it is speculated that the specific adsorption dominates in the adsorption of anions onto CFA. A characteristic M-OH group, which was different from conventional M-OH groups, was found to in CFA, and the substitution of M-OH groups at CFA surface by As( V) ions was found to play an important role in adsorption mechanisms of CFA. XPS spectra of CFA before and after adsorption of anions demonstrated that the active adsorption sites for fluoride are different from those for arsenic and phosphat