2Bolto B A.Polymers in water purification[J].prog.polym.sci.1995,20(6):1014-1016.
3Kweno M R,Sosulski F W,Bhirud P R.Preparation of amhoteric starches during aqueous alcohole cationization [J].starch, 1997,49(10): 119-124.
4Grmera R L,Heerama J Paarrish F W.Distribution and structure form of phosphate ester groups in commencial starch phosphates [J].Cereal chemistry, 1996,43(1 ): 104-111.
5Chan W C.Removal and recovery of gallium ion from solution by insoluble amphoteric[J].Starches, 1993,1 734-1 737.
