Measurement of Liquid Diffusion Coefficients of Aqueous Solutions of Glycine, L-Alanine, L-Valine and L-Isoleucine by Holographic Interferometry  

作　　者：赵长伟 李继定 马沛生 夏淑倩 

机构地区：[1]Department of Chemical Engineering Tsinghua University, Beijing 100084, China [2]School of Chemical Engineering and Technology Tianjin University, Tianjin 300072, China

出　　处：《Chinese Journal of Chemical Engineering》2005年第2期285-290,共6页中国化学工程学报（英文版）

基　　金：Supported by the National 973 Program of China (No. 2003CB615701)the National 863 Project of China (No. 2003AA328020)the National Natural Science Foundation of China (No. 200276034)the Educational Ministry Doctor Foundation of China (No 2000005608).

摘　　要：The diffusion coefficients of aqueous solutions ofglycine, L-alanine, L-valine and L-isoleucine at 298.15 K were determined by holographic interferometry with accuracy and promptness while without disturbance. The density and viscosity of these solutions were also determined. According to original Gordon model, a model for correlating the diffusion coefficients of amino acids in aqueous solutions was developed and applied. The results showed that this model provided significant convenience in correlation of diffusion coefficients for amino acids system.The diffusion coefficients of aqueous solutions of glycine, L-alanine, L-valine and L-isoleucine at 298.15 K were determined by holographic interferometry with accuracy and promptness while without disturbance. The density and viscosity of these solutions were also determined. According to original Gordon model, a model for correlating the diffusion coefficients of amino acids in aqueous solutions was developed and applied. The results showed that this model provided significant convenience in correlation of diffusion coefficients for amino acids system.

关 键 词：amino acid liquid diffusion coefficient holographic interferometry model 

分 类 号：TQ021[化学工程]