Document Detail


Correlation and Prediction of Osmotic Pressures for Aqueous Bovine Serum Albumin-NaCl Solutions Based on Two Yukawa Potentials.
MedLine Citation:
PMID:  11397048     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A new equation of state is proposed to correlate and predict the osmotic pressure data for aqueous bovine serum albumin (BSA) solutions with different NaCl concentrations and pH values with only one adjustable parameter. The Carnahan-Starling equation represents the contribution of the hard sphere repulsion to the osmotic pressure. The attractive dispersion and double-layer repulsion interactions are represented by two Yukawa potentials, respectively. The equation of state of Duh and Mier-Y-Teran for one Yukawa potential is expanded to two Yukawa potentials to describe the nonidealities of the charged BSA-aqueous NaCl solution, instead of the classical DLVO theory. The average relative deviation of correlation of the osmotic pressure in 0.15 M NaCl solution is 18%. The average relative deviation of prediction in 1-5 M NaCl solutions is 20.33%. A comparison with other models and the limitations of our model are discussed. Copyright 2001 Academic Press.
Authors:
Yang-Zheng Lin; Yi-Gui Li; Jiu-Fang Lu
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Journal of colloid and interface science     Volume:  239     ISSN:  1095-7103     ISO Abbreviation:  J Colloid Interface Sci     Publication Date:  2001 Jul 
Date Detail:
Created Date:  2001-Jun-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0043125     Medline TA:  J Colloid Interface Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  58-63     Citation Subset:  -    
Affiliation:
Department of Chemical Engineering, Tsinghua University, Beijing, 100084, People's Republic of China
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