TRPO萃淋树脂分离富集-偶氮胂Ⅲ分光光度法测定水中钍  

Spectrophotometric Determination of Thorium in Water with Arsenazo Ⅲ after Its Concentration Using TRPO-Resin

作　　者：张林 

机构地区：[1]四川会东铅锌矿中心试验室,四川省会东县615205

出　　处：《光谱实验室》1993年第5期43-45,32,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：本文研究了萃淋树脂TRPO分离富集水中钍。在0.96摩尔/升HNO_3介质中,Th与共存的Re和稀土元素分离。Th与偶氮胂Ⅲ络合物的最大吸收波长位于660纳米,表观摩尔吸收系数为4.87×10~5升。摩尔^(-1),厘米^(-1),此法已用于水中Th的测定,结果满意,Th的回收率为96.8%。Separation and preconcentration of Th using TRPO-resin in water was investi gated. Th from coexistent Re and rare earth elements in water was separated in the 0.96mol/l HNO_3 medium. Complex of Th with Arsenazo Ⅲ exhibits maximun ab sorption at 660nm. The apparent molar absorptivity is 4.87×10~5 L. mol^(-1)·cm^(-1). The method has been used to determine Th in water with satisfactory results. The recovery of Th is 96.8%.

关 键 词：钍 TRPO 偶氮胂 分光光度法 水 

分 类 号：O661.1[理学—分析化学]