摘要
本文研究了以5-Br-PADAP作显色剂,用偏最小二乘(PLS)分光光度法同时测定铌和钽。对模拟矿样和实际矿样的测定结果表明,测定铌钽的相对标准偏差分别小于0.73‰和0.63‰,平均相对误差小于10％,当铌钽含量太小时,可达13％。平均回收率在91％至99％之间,这表明该方法能用于选矿过程中铌钽的测定。
In this paper, thc simultancous de terminations of niobium and tantalum are studied by means of partial least sqares ( PLS ) spec tcopho tomelt ic method, in. wjocp 5-Br-PADAP is used as a developing reagent. The results of delermining niobium and tantalum in simulated and practical ore samples show that the relative standard deviations are less than 0.73?? and 0.63??, tespectively, and the average celative errors arc less than 10%, However it may reach 13% when amounts of niobium and tantalum are too low. They also show that average recovery ratio is between 91.0% and 99,4%, Therefore this method can be applied to the determinations of niobium and tantalum in dressing process.
出处
《赣南师范学院学报》
1993年第2期76-82,共7页
Journal of Gannan Teachers' College(Social Science(2))
关键词
偏最小二乘法
分光光度法
测定
铌
partial Least sqares
Spectrophotometry
simultaneous determinations of mult icomponent
Niobium and tantalum
