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Irreversible thermodynamic analysis of electrophoretic light scattering experiments
Author(s) -
Friedhoff L.,
Berne B. J.
Publication year - 1976
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.1976.360150104
Subject(s) - chemistry , electrolyte , thermodynamics , light scattering , relaxation (psychology) , ionic bonding , electrophoresis , non equilibrium thermodynamics , electrophoretic light scattering , ion , scattering , chemical physics , chromatography , physics , optics , psychology , social psychology , organic chemistry , electrode
A fluctuation theory for electrolyte solutions is developed based on the coupling between the equations of nonequilibrium thermodynamics and the Poisson equation. The resulting fluctuation theory is applied to the analysis of electrophoretic light scattering. It is shown that in a binary electrolyte solution (two ionic species), the Doppler shift is not determined by the electrical mobility of either ion, but depends instead on the rate of change of transference number with salt concentration. In addition the ionic relaxation time is shown to be proportional to the conductivity of the solution.