DBC-偶氮氯膦分光光度法测定钛  

Determination of Titanium with DBC-Chlorophosphonazo by Spectrophotometry

作　　者：翟庆洲[1] 胡伟华[1] 

机构地区：[1]长春理工大学西校区纳米技术研究中心,吉林长春130022

出　　处：《中国稀土学报》2003年第z1期178-179,共2页Journal of the Chinese Society of Rare Earths

基　　金：长春理工大学留学归国人员专项基金资助

摘　　要：在0.012mol·L-1盐酸介质中,钛(Ⅳ)与DBC 偶氮氯膦生成1∶2蓝色络合物,最大吸收波长为626nm,εmax=3.96×104L·mol-1·cm-1,钛在0.080～0.60μg·ml-1范围内遵守比耳定律,本法已用于合金钢中微量钛测定,结果满意。In the medium of 0.012 mol·L^(-1) hydrochloride acid titanium(IV) reacts with DBC-chlorophospho-nazo(DBC-CPA) to from a blue complex and the composition ratio of titanium to DBC-CPA is 1∶2. The maximum absorption of the complex locates at 626 nm,and the apparent molar absorptivity is 3.96×10~4 L·moL^(-1)·cm^(-1). Beer′s law is obeyed over the concerntration range of 2.0～15.0 μg/25 ml of titanium(Ⅳ). The present method was used in the analysis of microamounts of titanium in alloys with satisfactory results.

关 键 词：钛 分光光度法 DBC-偶氮氯膦 合金 

分 类 号：O657.32[理学—分析化学]