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Biophysical Journal 11: 559-571 (1971)
© 1971 the Biophysical Society

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Membrane Potentials and Ion Permeability in a Cation Exchange Membrane

Robert B. Gunn and Peter F. Curran

ABSTRACT

The nonequilibrium electrical potentials across an artificial membrane bathed by solutions of a single salt have been measured and calculated using the Goldman-Hodgkin-Katz equation and the irreversible thermodynamic equation. The latter equation predicts the observed potential differences over a 2500-fold concentration range, while application of a modified Goldman-Hodgkin-Katz equation leads to difficulties.






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Copyright © 1971 by the Biophysical Society.