EDTA—二胺类缩聚物对贵金属的富集 Ⅰ.EDTA—二氨基冠醚缩聚物对金的吸附性能研究

EDTA-DIAMINO CONDENSATION POLYMER FOR PRECONCENTRATIONOF NOBLE METAL I.ADSORPTION BEHAVIOR OF GOLD ON EDTA-DIAMINODIBEZO-18-CROWN-6 CONDENSATION POLYMER

研究了EDTA—二氨基二苯并18冠—6缩聚物(顺式)对金的吸附.实验表明这种缩聚物对金吸附效率高、平衡时间快、吸附容量大和再生使用性能好,可从镀金废液中回收微量金,对金是一种良好的富集剂.还作了与该缩聚物结构相似的化合物的吸附比较和红外光谱,探讨其吸附机理,与该缩聚物吸附铀时存在的协同效应有所不同.

EDTA-cis-diaminodibenzo-18-C-6 condensation polymer is a new compound of polymer with carboxyl groups. Adsorption behavior of gold 01 this polymer from chloride solutions were investigated. Property of adsorption and deadsorption, adsorption capacity, the recovery ability of gold from gold-plating wastes and showed that the polymer was a effective preconcentration reagent. The adsorption mechanism for gold ion was different from that of uranyl ion reported in previous paper. The function groups of the polymer did not exhibit synergistic effects in there complexation with gold.