茴香醛和茴香酸紫外光谱吸收特性的研究及其定量分析  

UV absorption characteristics and quantitative analysis method of anisaldehyde and anisic acid

作　　者：陈敏[1] 粟桂娇[2] 马丽[1] 刘雄民[1] 暴玮[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004 [2]广西大学生命科学与技术学院,广西南宁530004

出　　处：《日用化学工业》2008年第2期128-131,共4页China Surfactant Detergent & Cosmetics

基　　金：广西自然科学基金资助项目(桂科回0448002);广西教育厅科学研究资助项目(桂教科研[2005]27号)

摘　　要：考察了茴香醛、茴香酸及其混合物的紫外光谱吸收特性，建立了一种能同时测定茴香醛和茴香酸含量的紫外分光光度法。结果表明，茴香醛和茴香酸在260nm有等吸收点，利用紫外等吸收点特性简化混合物各组分质量浓度的计算方程，得出了线性方程：P（茴香醛）=（A2-2-0．0064）／0．0775，ρ（茴香酸）=（A260-A292）／0．0775。茴香醛和茴香酸的回收率分别在97．42％～100．09％和99．89％～101．90％，相对标准偏差均小于2．0％。UV absorption characteristics of anisaldehyde and anisic acid were investigated. Based upon the investigation, a quick quantitative analysis method for the determination of the content of anisaldehyde and anisic acid was established. Experimental results showed that both anisaldehyde and anisic acid have an iso- absorptive point in their UV spectra. Using the characteristic of the iso - absorptive point, linear equations tor calculating the mass concentration of anisaldehyde and anisic acid were developed as p（anisaldehyde） = （A292 - 0. 006 4）/0. 077 5 and ρ （ anisic acid ） = （A260 - A292 ）/0. 077 5. Recovery of anisaldehyde and anisic acid achieves 97.42% - 100. 09% and 99. 89% - 101.90% respectively. Relative standard deviation is less than 2.0%.

关 键 词：香料 茴香醛 茴香酸 紫外分光光度法 等吸收点 

分 类 号：TQ655[化学工程—精细化工]