氧化偶氮胂M褪色光度法测定痕量钛(Ⅳ)  

Kinetic spectrophotometric determination of trace titanium (Ⅳ) based on discoloration of arsenazo M oxidized by potassium bromate

作　　者：周之荣[1] 周瑜芬[1] 牛建国[1] 王黎[1] 

机构地区：[1]东华理工学院应用化学系,抚州344000

出　　处：《分析试验室》2005年第5期51-54,共4页Chinese Journal of Analysis Laboratory

基　　金：东华理工学院院长基金资助项目(DHY0449)

摘　　要：基于0.08mol L的H2SO4介质中,痕量钛(Ⅳ)催化KBrO3氧化偶氮胂M的褪色反应,建立了测定痕量钛的催化光度法。方法检出限为0.26μg L,线性范围为0～8.0μg L。结合溶剂萃取分离技术,可用于人发、茶叶样品中痕量钛(Ⅳ)的测定。Based on the catalytic effect of trace titanium(Ⅳ) on discoloring reaction of arsenazo M with potassium bromate in 0.08 mol/L sulphuric acid solution, a method for the determination of trace titanium (Ⅳ) has been developed by kinetic spectrophotometry. The detection limit is 0.26 μg/L and the linear range of the determination is 0.0～8.0 μg/L for titanium (Ⅳ). Combined with solvent extraction separation, the method has been applied to the determination of trace titanium (Ⅳ) in human hair and tea samples with satisfactory results.

关 键 词：钛 动力学光度法 偶氮胂-M KBRO3 

分 类 号：O614.432[理学—无机化学] O657.32[理学—化学]