At a gibbsdonnan equilibrium, there will be an osmotic diffusion. Learn vocabulary, terms, and more with flashcards, games, and other study tools. If this concentration is low, the second term vanishes, and eqs. Simulating donnan equilibria based on the nernstplanck. Strategies in the application of the donnan membrane technique article pdf available in environmental chemistry 85 december 2010 with 297 reads how we measure reads. Give your business a boost with the strategic digital marketing agency based in california. One of the intriguing features of the donnan equilibrium is the ensuing osmotic. It is obtained from balancing the charge over the donnan porosity through 5. Combine files into a single pdf, insert a pdf into another pdf, insert a clipboard selection into a pdf, or placeinsert a pdf as a link in another file. Start studying gibbs donnan equilirbium, resting membrane potential.
Donnan dialysis generated by the difference between the activity of anions in the two solutions. Gibbs donnan equilirbium, resting membrane potential. How the gibbs donnan equilibrium forms an electrical charge on a cell membrane. The membrane potential at rest is not governed solely by the nernst potentials of any. These consequences were investigated in a number of papers by donnan and various coworkers 37. Measurement of donnan potentials in gels by insitu. Donnan potentials in aqueous phaseseparated polymer mixtures. Please, select more pdf files by clicking again on select pdf files. Combine or merge files into a single pdf, adobe acrobat dc. Generation of membrane potential beyond the conceptual range of donnan theory and goldmanhodgkinkatz equation article pdf available in journal of biological physics 433. Transport of ions in solution and across membranes the nsr. The net charge may be smaller or larger than the basic clay layer charge originating from isomorphic substitution, in response to a partial shielding or an addition of charges by more strongly bound surface ions. Further treatment of this system requires an understanding of electrochemical potentials lli which are described below.
Donnan dialysis uses ion exchange membranes to extract and separate cations. Gibbs donnan equilibrium and the membrane potential. Ion exchange membrane adsorption in donnan dialysis. Viewed in this light, the system in heart, the nernst potentials of the various ions table vii, even though displaced from the. Follow these steps to use adobe acrobat to combine or merge word, excel, powerpoint, audio, or video files, web pages, or existing pdfs. Rearrange individual pages or entire files in the desired order. The gibbsdonnan nearequilibrium system of heart journal of. Combining the two approximations gives the following linearized. Salt partitioning, for example, was carefully studied by donnan and harris 3 for solutions of congored the disodium salt of. However, the donnan potentials in these systems are due to the addition of. Donnan membrane equilibrium, a form of osmotic pressure rela tionship.842 400 580 1227 953 71 1376 1229 629 454 1432 139 336 95 1437 695 636 112 178 845 1246 1094 1331 1129 565 688 191 1111 1382 260 428 541 332 864 659 1003 6 1105 969 439 752 180