【摘要】 本文叙述了笼形聚肟偕亚氨二乙酸钠与二价金属离子的交换反应。实验结果表明,树脂对重金属离子有良好的选择性。Hg²⁺、Cu²⁺、Pb²⁺离子的交换效率分别是95、90、85％;但对碱土金属离子的交换能力较低。交换容量顺序和EDTA-Me（Ⅱ）络合物的稳定常数顺序基本相同。笼形聚肟偕亚氨二乙酸钠和Pb²⁺离子的交换反应服从经验方程。交换速度的观测结果认为交换反应主要是在相邻的两个亚氨二乙酸基之间进行。更多还原

【Abstract】 The present article deals with exchange reaction between the "cage" sodium poly-(oxime-amidodiacetate) and bivalent metal ions. The experimental results indicated that the resins had the fine selectivity for heavy metal ions. The exchange efficiency for Hg2+, Cu2+, and Pb2+ ions were 95, 90, and 85 percent, respectively. The order of the exchange capacity is similar to that of the stability constants of the complexes of EDTA-Me(Ⅱ).更多还原