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研究以球形壳聚糖和水杨醛为原料制备球形壳聚糖希夫碱的工艺路线，讨论了产品对过渡元素离子的螯合能力，其螯合能力从大到小依次为：Ｎｉ２＋ 、Ｃｕ２＋ 、Ｚｎ２ ＋ 、Ｃｏ２＋ 。
The preparation of spherical chitosan Schiff base from spherical chitosan and salicylaldehyde was studied. The chelating ability of the products to the transition element ions was discussed. The chelating ability of the products was Ni2 +, Cu2 + , Zn2 +, Co2 +.