氟钽酸根离子选择性电极测定微量单矿物中的钽

Determination of Tantalum in Minerals of Micro Amounts by Using Fluorotantalate Ion-selective Electrode

微量单矿物中钽的测定,通常采用分离后分光光度法。不论分离还是测定,都需用一些有毒的有机溶剂,不利于人体健康。近来,上海冶金所研制成PVC膜氟钽酸根离子选择性电极,并在钢铁、合金中得到了应用。本文将此电极用于微量单矿物分析,实验表明。

A method for determining tantalum in minerals of micro amounts using fluorotantalate electrode is described.Under the conditions recommended in this paper,a linear response with the slope of 57 mv has been obtained in the range of 5-1000μg Ta_(2)O_(5)/50 ml.Fe^(3+),A1^(3+),Ti^(4+),Zr^(4+),Mn^(2+),MoO_(4)^(2-),WO_(4)^(2),SiO_(3)^(2-)and BO_(3)^(3-),etc.,do not interfere with the determination.This method has been applied to the determination of tantalum in manganotantalite of micro amounts, the results are in good agreement with those of other methods. The method is simple and rapid.