The spectral analysis indicated that the complex reactions took place mainly between the amino group(-NH2),the hydroxyl group(-OH),part of the acetylamino(-CONH2) of chitosan and Fe3+;

• 壳聚糖中主要是-NH2和-OH参与了与金属离子的配位,部分乙酰氨基(-CONH2)也可能参与了配位。