5-Br-PADAP分光光度法测定稀土金属中微量钽  

Spectrophotometric Determination of Micro Amounts of Tantalum with 5BrPADAP in Rare earth metals

作　　者：吴辛友[1,2] 罗道茂 

机构地区：[1]北京有色金属研究总院 [2]西南航天职工大学

出　　处：《分析试验室》1998年第2期36-38,共3页Chinese Journal of Analysis Laboratory

摘　　要：采用５－Ｂｒ－ＰＡＤＡＰ分光光度法直接测定稀土金属中微量钽，探讨了最佳的测定条件。选用酒石酸体系，发现稀土金属元素０．１０００～０．３０００ｇ对Ｔａ－５－Ｂｒ－ＰＡＤＡＰ络合物显色反应无明显影响，不需预分离主体、方法简便、稳定性好，已用于Ｄｙ、Ｔｂ、Ｙｂ、Ｓｍ、Ｎｄ和Ｙ等稀土金属中微量钽的测定，测定范围为０．００５％～０．１０％Ｔａ２Ｏ５。The optimum conditions of spectrophotmetric determination of micro amounts of tantalum with 5BrPADAP in rare earth metals have been studied.The experimental results show that 0.1～03g rare earth ions do not interfere with the determination.This method has the advantages of high stability,simplicity and rapidity.The detection range is 0.005%～0010% Ta2O5.The proposed method has been applied to the detection of tantalum in Dy,Tb,Yb,Sm,Nd and Y with satisfactory results.

关 键 词：5-BR-PADAP 光度法 钽 稀土金属 

分 类 号：O614.513[理学—无机化学] TG146.45[理学—化学]