Abstract

Heat effects and densities of lysozyme solutions in Na-acetate buffer pH 4.2 at various Li 2SO 4, MgCl 2 and (NH 4) 2SO 4 concentrations were determined by an LKB 10700-2 microcalorimeter and an Anton Paar 60/602 densimeter (25 °C). The calorimetric measurements were carried out through mixing equal volumes of the solutions to be investigated. The density measurements were made after 1, 24 and 48 h of the dissolution of lysozyme in the buffer and electrolyte studied. Changes of nucleation enthalpy and apparent molar volumes vs. concentration of electrolyte studied have similar course.

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