摘要
研究了显色剂二安替比林甲烷分光光度法测定钛Ti(IV)的方法。在酸性介质中,二安替比林甲烷与钛发生灵敏显色反应,生成黄色络合物,最大吸收波长为390nm,摩尔吸光系数为2.9×104L/(mol.cm),钛含量c在0～35μg/(25mL)范围内与吸光度A符合比耳定律,线性回归方程为A=0.03243+0.02388c,溶液中大量共存离子均不干扰测定。该方法不需要萃取、分离步骤,可直接测定水泥中微量钛的含量。
The method for determining Ti（Ⅳ） with reagent diantipyrylmethane by spectrophotometry was studied. In acidic medium, a sensitive color reaction of diantipyrylmethane and titanium produced yellow complex with maximum absorption wavelength of 390 nm, molar absorptivity of 2.9 × 10^4 L/（ mol · cm）. In the range of 0 -35 μg/（25 mL） for titanium content, Beer＇s law was obeyed, and the linear regression equation was A = 0. 032 43 ＋ 0. 023 88c. A large number of ions in solution did not interfere the determination. The method can be used to determine trace titanium in cement directly without extraction and separation procedures.
出处
《化学分析计量》
CAS
2009年第4期57-59,共3页
Chemical Analysis And Meterage
关键词
钛
分光光度法
二安替比林甲烷
水泥
titanium, spectrophotometry, diantipyrylmethane, cement
