激光实时全息干涉法测量甘氨酸水溶液扩散系数  

Diffusivity measurement of glycine aqueous solution using real-time holographic interferometry

作　　者：马友光[1] 段志青[1] 朱春英[1] 余国琮[1] 

机构地区：[1]天津大学化学工程联合国家重点实验室,天津300072

出　　处：《应用激光》2004年第2期99-101,共3页Applied Laser

基　　金：国家自然科学基金资助项目(No .2 0 176 0 36 )

摘　　要：本文利用激光实时全息干涉技术 ,测量了甘氨酸水溶液的扩散系数。首先测定了 2 98.15K下蔗糖水溶液的扩散系数 ,取得了较好的结果 (总相对误差为 0 .84 % ) ,证明了装置的准确性。进而用该装置对不同浓度下的甘氨酸水溶液进行测定 ,得到了不同浓度甘氨酸水溶液在不同位置的扩散系数及每一浓度下的平均扩散系数 。A real-time holographic interferometer is used to measure the diffusivities of glycine aqueous solution. The diffusion coefficients of sucrose aqueous solution are measured at temperature 25℃ to verify the accuracy and reliability of the instrument, and good results are obtained (the total relative error was 0.84%). Furthermore, the diffusion coefficients of glycine aqueous solution at different concentrations are measured by means of the instrument, the diffusivities and average values of glycine aqueous solution at different positions for each concentration are obtained respectively. At last, the determined results are analyzed and discussed.

关 键 词：激光实时全息干涉 甘氨酸水溶液 扩散系数 液相扩散 

分 类 号：O645.14[理学—物理化学] TN247[理学—化学]