氯化甲基三烷基铵(CL-7402)萃淋树脂是胺类萃淋树脂,含7402为40％。本文报道了该树脂在中性偏碱性体系中对银元素的静态分布系数。讨论了温度、树脂用量,振摇时间对吸附银的影响。测定了树脂吸附银的饱和容量及树脂的含氮量,由此确定吸萃物的组成比,用红外光谱探讨了该萃淋树脂吸附银的机理。在此基础上,对定影废液中的银进行了吸附与富集,取得了较好的结果。 Methyltrialkylammonium chloride (CL-7402) Extract resin is an amine-based resin, containing 7402 40%. In this paper, the static distribution coefficient of the silver element in neutral alkaline system was reported. The effects of temperature, amount of resin and shaking time on the adsorption of silver were discussed. The saturated capacity of resin-adsorbed silver and the nitrogen content of the resin were measured to determine the composition ratio of the adsorbed material. The mechanism of the adsorption of silver by the extractable resin was discussed by infrared spectroscopy. On this basis, the silver in the fixing waste liquid was adsorbed and enriched, and good results were obtained.