Ficks law

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Fick's law can be used to measure flux (J).

For example when the movement of ions is in a non-equilibrium state, net movement of solute across the membrane.

Equation:

J=P x C

J= Flux (Units= Moles/CM/Second)

P= Permeability (Units= CM/Second)

C= Concentration Gradient for uncharged solute across the membrane (Units= Moles/ CM)

Example:

J= ?

P= 20 moles/cm/second

C= 58 moles/cm

J= 20x58= 1160 moles/cm/second

Therefore flux (J) = 1160 moles/cm/second [1].

References

  1. Steven L. Jacques, Scott A. Prahl [1998] Fick's 1st law of diffusion [Internet], Oregon Graduate Institute, ECE532 Biomedical Optics. Available from http://omlc.ogi.edu/classroom/ece532/class5/ficks1.html [Accessed 20th October 2013]
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