开链冠醚萃取铀氧离子性能的研究

<title>Study on extraction of uranyl ion with 1,7-bis(8′quinoline)-1,4,7-trioxahepfane

研究了新萃取剂BQTH在三氯甲烷溶液中,从水杨酸根介质中萃取铀的性能,考察了水相酸度、萃取剂浓度、水杨酸根离子浓度及萃取时间对萃取效能的影响,确定了萃合物中萃取剂(BQTH)与UO2+2的组成比为1∶1及最佳萃取条件。在最佳条件下该萃取体系对1×10-4mol/L的铀酰离子一次萃取率可达78.0%.

<Abstrcat>The extraction of U(Ⅵ) from sodium salicylate solutions by 1,7bis(8′quinoline)1,4,7trioxahepfane(BQTH) in chloroform was studied. The dependence of the extractability on the concentrations of BQTH and aqueous sodium salicylate,aqueous acidity,and extracting time were investigated. Uranyal ion reacted with BQTH and formed a stable 1:1 compex. Under the optimal conditions,the extractability of U(Ⅵ) was found to be 78.0%.