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Citation: XU Li, WANG Xu, LIN Rui-sen. Volumetric Properties of L-Serine in n-propanol-Water Mixed Solvents at 298.15 K[J]. Acta Physico-Chimica Sinica, ;2005, 21(11): 1315-1318. doi: 10.3866/PKU.WHXB20051125 shu

Volumetric Properties of L-Serine in n-propanol-Water Mixed Solvents at 298.15 K

1.
Department of Chemistry, Zhejiang University, Hangzhou 310027

Received Date: 20 April 2005
Available Online: 15 November 2005

Densities of L-serine-n-propanol-water ternary solutions have been measured at 298.15 K by an oscillating-tube densimeter. Apparent molar volumes, limiting partial molar volumes, transfer partial molar volumes and hydration numbers for L-serine have been calculated. The transfer volumes from water to n-propanol-water mixtures and hydration numbers have been discussed in terms of the structural hydration interaction model. The results show that a dominant interaction between —OH group of n-propanol and the zwitterionic group of serine gives positive contribution to the transfer volume. The transfer volumes of serine from water to n-propanol-water mixed solvents are positive, and increase with increasing n-propanol concentration, while the hydration numbers decrease with increasing n-propanol concentration.
- L-serine;n-propanol;Limiting partial molar volumes;Structural interactions
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