高纯钛氧化物中微量铁的萃取分光光度测定

Determination of Microgram Iron in High Purity titanium oxide by Extraction-Spectrophotometry

利用二氯乙烷萃取邻二氮菲－铁（Ⅱ）－苦味酸盐三元配合物，可以藉分光光度法测定钛氧化物中的微量铁，表观摩尔吸光系数达１．２２×１０５。方法灵敏、干扰少，已用于高纯钛氧化物中微量铁的测定。

After extracting the three-component complex-o-phenanthroline-Fe(Ⅱ)-picrate by 1,2-dichloroethane microgram iron in titanium oxide could be determied by spectrophotometry. Its apparant molar absorption coefficient was 1.22×105. This method, more sensitive and less interferential, has been used to analyze the iron content in high purity titanium oxides.