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萨文在他有关偶氮胂Ⅲ分析应用的评论文章中谈到:如果钛和钍的此不超过10:1,那么在测定钍时,钛就没有干扰。曾用偶氮胂Ⅲ测定过各种岩石(诸如花岗岩和花岗正长岩)中的钍。这些岩石中钛的浓度通常低于0.1%,钛和钍的比低于10:1。粘土中的二氧化钛含量近于1%,但是澳大利亚煤灰中二氧化钛的含量高达3%。粘土的钍含量仅仅为 ppm 数量级,为得到准确的分析结果,必须研究测定钍时钛的
In a review article about the application of arsenazo III analysis, Savimbi said that if titanium and thorium do not exceed 10: 1, there is no interference with the determination of thorium. Thorium in various rocks (such as granite and granodiorite) has been measured with arsenazo III. The titanium concentration in these rocks is usually less than 0.1% and the ratio of titanium to thorium is less than 10: 1. The content of titanium dioxide in clay is close to 1%, but the content of titanium dioxide in Australian ash is as high as 3%. Thorium content of clay is only on the order of ppm, in order to get accurate analysis results, we must study the determination of thorium titanium