二氧化钛中微量杂质的光谱分析

The Determinatin of Trace Impurities in TiO_2 by Emmission Spectrometry

取二氧化钛０．５ｇ，在适当的温度下，通氟化氢气体，使二氧化钛生成四氟化钛挥发，从而达到基体与杂质的分离，残留物用０．４ｍＬ３ｍｏｌ／Ｌ盐酸溶解，将此溶液移到石墨电极，烘干后摄谱。本方法：可分析二氧化钛中１６个杂质元素，检出限为１０－５％－１０－６％。

Under proper humidity,ventilate HF to TiO2 0.5g,later it evaporates so that impurity elements can be Separate from matrix,The remains is dissolved with 0.4mL 3mol/L HCl,and the solution is transfered into graphite electrode.Then dry it,arid make a spectrograph.The method can analyse 16 trace impurity elements in TiO2.The sensitivity is in 10-5%-10-6%.