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一、引言在现有文献中,大部分是采用重量法测定矿物原料中的含钍量,其中应用得最广的是草酸-苯甲酸法、碘酸盐-草酸盐法,重量法都必须经过与一般元素分离及与稀土元素分离这两个步骤,烦复费时。文献[1,3,4,5]中介绍了许多比色法,但是比色法也要经过这两个分离步骤,不仅烦复费时,而且不适于测定含钍量高的矿物。
I. INTRODUCTION In the existing literature, the majority of gravimetric methods are used for the determination of thorium content in mineral raw materials. The most widely used method is oxalic acid-benzoic acid method, iodate-oxalate method, gravimetric method After separation with the general elements and the separation of rare earth elements in these two steps, troublesome and time-consuming. Many colorimetric methods are described in [1, 3, 4, 5], but the colorimetric method goes through these two separation steps, not only annoyingly time-consuming but also unsuitable for the determination of minerals containing high levels of thorium.