298.15K下氨基酸在D-木糖水溶液中的体积性质  

Volumetric Properties of Amino Acids in Aqueous D-Xylose Solutions at 298.15 K

作　　者：许莉[1] 王旭[1] 马林[2] 林瑞森[1] 

机构地区：[1]浙江大学化学系,杭州310027 [2]广西大学化学化工学院,南宁530004

出　　处：《高等学校化学学报》2006年第8期1549-1551,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20273061);浙江省教育厅科研项目(批准号:20030344)资助

摘　　要：Densities of glycine,L-alanine and L-serine in various aqueous D-xylose solutions were measured at 298.15 K by an Anton Paar Model 55 densimeter.Apparent molar volumes,limiting partial molar volumes and hydration numbers for these amino acids were calculated.The transfer volumes from water to aqueous(D-xylose) solutions were obtained and discussed in terms of the structural hydration interaction model.The results show that all of the transfer volumes are positive,and increase with increasing xylose concentration;the side-chain contributions to the transfer volumes are highly related to the nature of side-chain groups;the hydration numbers for the three amino acids in solutions decrease with increasing xylose concentration.Densities of glycine, L-alanine and L-serine in various aqueous D-xylose solutions were measured at 298. 15 K by an Anton Paar Model 55 densimeter. Apparent molar volumes, limiting partial molar volumes and hydration numbers for these amino acids were calculated. The transfer volumes from water to aqueous D-xylose solutions were obtained and discussed in terms of the structural hydration interaction model. The results show that all of the transfer volumes are positive, and increase with increasing xylose concentration; the side-chain contributions to the transfer volumes are highly related to the nature of side-chain groups; the hydration numbers for the three amino acids in solutions decrease with increasing xylose concentration.

关 键 词：氨基酸 D-木糖水溶液 偏摩尔体积 

分 类 号：O645.12[理学—物理化学]