Abstract
AbstractA theory based on a rigid sphere model is presented for the diffusion coefficient of dissolved gases (and liquids) in protein solutions. The only quantities needed in order to make calculations are the rigid sphere diameters and the solution density; methods are given for obtaining the diameters.The theory predicts that the ratio of the diffusion coefficient of the gas in protein solution to that in pure water is strongly dependent on the size of the protein molecule, but is insensitive to the properties of the solute gas. The theory gives good agreement with available experimental data for the effects of protein concentration and molecular properties on the diffusion coefficient.
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