苯氨基甲酸甲酯精馏残渣的紫外分光光度分析  

Analyzing the Content of Component of Rectified Residuum of MPC

作　　者：张磊[1] 袁存光[1] 唐仕明[1] 

机构地区：[1]中国石油大学化学化工学院,山东东营257061

出　　处：《化工生产与技术》2005年第6期35-37,共3页Chemical Production and Technology

摘　　要：对非光气法合成苯氨基甲酸甲酯精馏残渣中各组分,采用双波长紫外分光光度法进行了含量分析试验。试验结果表明:N,N'-二苯基脲的吸光度和质量浓度一元线性回归方程为ADPU=0.3949ρDPU-0.001031,相关系数R2=0.9999;苯氨基甲酸甲酯和N,N'-二苯基脲的回收率分别为96.1%～102.3%和96.8%～101.0%,相对标准偏差小于0.4%;将该法所测定结果与高效液相色谱所测定结果比较,其相对偏差小于2%。采用双波长紫外分光光度法测定MPC和DPU的含量具有准确、快速、简便等特点。In the process of separating and purifying the reaction of liquid of non- phosgene synthesize MPC, producing a part of residuum, it is very important to dispose residuum effectively about analyzing the content of components. By the double- wavelength ultraviolet spectrophotometry for the determination of MPC and DPU, the RSD of experiment of stability is less than 0.2% , by the experiment of recycle, the range of MPC is 96.1～ 102.3% and DPU 96.8～ 101.0% , the result of this way compared with the HPLC is less than 2% .Double- wave length ultraviolet spectrophotometry for the determination of MPC and DPU is exact, fast and simple.

关 键 词：苯氨基甲酸甲酯 N N′-二苯基脲 双波长紫外分光光度法 回收率 

分 类 号：O657.31[理学—分析化学] O625.5[理学—化学]