含硫、氮配位原子的螯合树脂对贵金属具有良好的吸附性能。本工作合成的以聚硫醚为主链,侧链为多乙烯多胺的树脂尚未见文献报道。这类树脂硫、氮含量较高,主链和侧链均能对贵金属离子起络合作用,故对Au~(3+)、Ag~+、Pd~(2+)、Pt~+等具有较强的吸附能力。树脂的合成路线和预期的主要结构如下。 Chelating resins containing sulfur and nitrogen atoms have good adsorption properties on precious metals. This work synthesized polythioether as the main chain, the side chain of polyethylene polyamine resin has not been reported in the literature. Such resin sulfur, nitrogen content is higher, the main chain and side chains can play a complexing effect on the precious metal ions, so for Au ~ (3 +), Ag ~ +, Pd ~ (2 +), Pt ~ + Strong adsorption capacity. The synthetic route of the resin and the expected main structure are as follows.