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Microelectrophoretic study of calcium oxalate monohydrate in macromolecular solutionsElectrophoretic mobilities were measured for calcium oxalate monohydrate (COM) in solutions containing macromolecules. Two mucopolysaccharides (sodium heparin and chondroitin sulfate) and two proteins (positively charged lysozyme and negatively charged bovine serum albumin) were studied as adsorbates. The effects of pH, calcium oxalate surface charge (varied by calcium or oxalate ion activity), and citrate concentration were investigated. All four macromolecules showed evidence for adsorption. The macromolecule concentrations needed for reversing the surface charge indicated that the mucopolysaccharides have greater affinity for the COM surface than the proteins. Citrate ions at high concentrations appear to compete effectively with the negative protein for surface sites but show no evidence for competing with the positively charged protein.
Document ID
19880051457
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Curreri, P. A.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Onoda, G. Y., Jr.
(IBM Thomas J. Watson Research Center Yorktown Heights, NY, United States)
Finlayson, B.
(Florida, University Gainesville, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
Inorganic And Physical Chemistry
Accession Number
88A38684
Funding Number(s)
CONTRACT_GRANT: NIH-AM-20586-01
Distribution Limits
Public
Copyright
Other

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