Ce(Ⅳ)-(DBC-偶氮胂)-OP乳化剂体系分光光度法测定铈  

Spectrophotometric Determination of Cerium in Cerium(Ⅳ)-(DBC-Arsenazo)-Emulgent OP System

作　　者：胡伟华[1] 蔡建岩[2] 

机构地区：[1]长春理工大学纳米技术研究中心,吉林长春130022 [2]长春大学职业技术学院,吉林长春130022

出　　处：《湿法冶金》2007年第4期220-222,共3页Hydrometallurgy of China

摘　　要：研究了Ce(Ⅳ)-(DBC-偶氮胂)-乳化剂OP体系分光光度法测定铈的最佳条件及分光光度性质,考察了某些表面活性剂对体系性质的影响。在0.72mol/L硫酸介质中,体系最大吸收波长为530nm,表观摩尔吸光系数为ε_(530nm)=1.05×10~4L·mol^(-1)·cm^(-1),Ce(Ⅳ)质量浓度在30～300μg/25mL范围内遵守比耳定律。本法用于测定钢样中微量铈,结果令人满意。The optimim conditions for determination of cerium （Ⅳ） and the spectrophotometric properties of the Ce （Ⅳ）-（DBC-arsenazo）-emulgent OP system were sttidied . The effect of some surfactants were examined. In sulfuric acid medium of 0.72 mol/L, the maximum absorption wavelength of the system Ce（IV）-（DBC-arsenazo）-OP locates at 530 nm. The apparent molar absorption coefficient is 1.05 10^4L/（mol · cm）. Beefs law is obeyed in range of 30-300 μg/25 mL for cerium （Ⅳ）. The present method was used for determination of micro amount cerium in steel sample with satisfactory results.

关 键 词：铈(Ⅳ) 分光光度法 (DBC-偶氮胂)-OP乳化剂 钢样 测定 

分 类 号：O657.3[理学—分析化学]