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期刊论文
氨基酸在水溶液中的扩散系数
化工学报,2005,56(4):243~245,-0001,():
There are stilllimited experimental data of liquid diffusion coefficients in literature. Therefore, the experimental investigation and prediction model are of practical and theoretical significance. The diffusion coefficients of L_serine, L-threonine, L-arginine, in aqueous solution at 298.15K were measured respectively by holographic interferometer. The affecting factors of molecular structur and polarity were analyzed and discussed. Finally, a modified semi-empirical model for correlating the diffusion coefficients of solid organic compounds in aqueous solutions at 298.15K was proposed with an adjustable parameter added. The average deviation between model prediction values and experimental ones is less than 0.2, which shows a considerably satisfactory accuracy.
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