茚三酮法测定氨基接枝介孔MCM-41中氨基含量  

Determination of Amino in Amine-modified MCM-41 by Ninhydrin

作　　者：逯月然 赵会玲[2] LU Yue-ran;ZHAO Hui-ling(Shijiazhuang Experimental High School,Hebei Shijiazhuang 052460;School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 201424,China)

机构地区：[1]石家庄实验中学,河北石家庄052460 [2]华东理工大学化学与分子工程学院,上海201424

出　　处：《广州化工》2019年第24期101-102,116,共3页GuangZhou Chemical Industry

基　　金：华东理工大学2018校内实验教学改革项目

摘　　要：氨基修饰量是衡量氨基修饰介孔材料性能的重要指标,茚三酮显色反应常用于氨基酸中氨基含量的测定方法,本文利用茚三酮和介孔材料表面的氨基作用后的显色反应测定氨基接枝MCM-41样品在400~700 nm波长范围的吸光度值,结果显示样品在500 nm处有吸收峰,并且吸光度值和氨基量呈线性关系,其线性方程为A=6.5925C+0.0384,因此可以采用茚三酮法检测介孔材料中氨基含量。Amine modification quantity is important to measure the properties of amino-modified mesoporous materials.Ninhydrin Chromogenic reaction is a common method for determination of amino acids.According to chromogenic reaction of amino group modified on MCM-41s and Ninhydrin,the absorbance of the sample was detected between 400 nm and 700 nm.The results indicated that the riveting ratio of amino in modified MCM-41 was liner over absorbance.The regression equation was A=6.5925C+0.0384.Ninhydrin Chromogenic reaction can be used to determinate the amino concentration in mesoporous materials.

关 键 词：MCM-41 茚三酮 氨基 介孔材料 

分 类 号：O657.99[理学—分析化学]