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Comparison of enthalpy and apparent molar volume data on nucleating lysozyme solution at various Li2SO4, MgCl2 and (NH4)2SO4 concentrations

✍ Scribed by A. Zielenkiewicz; W. Zielenkiewicz

Publisher: Elsevier Science
Year: 2005
Tongue: English
Weight: 382 KB
Volume: 121
Category: Article
ISSN: 0167-7322
DOI: 10.1016/j.molliq.2004.08.020

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✦ Synopsis

Heat effects and densities of lysozyme solutions in Na-acetate buffer pH 4.2 at various Li 2 SO 4 , MgCl 2 and (NH 4 ) 2 SO 4 concentrations were determined by an LKB 10700-2 microcalorimeter and an Anton Paar 60/602 densimeter (25 8C).

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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