TY - JOUR
T1 - Cation binding to membranes
T2 - Competition between mono-, di- and trivalent cations
AU - Bentz, Joe
AU - Nir, Shlomo
PY - 1980/3
Y1 - 1980/3
N2 - The binding of mono-, di- and trivalent cations to negatively charged surfaces is studied within the framework of a modified Gouy-Chapman equation. For any given combination of ions of the above valences, the existence and uniqueness of the solution for the surface potential is shown. The treatment provides the surface potential and charge density. For a system containing only monovalent and divalent ions, analytical solutions are given. When trivalent ions are also present, a procedure based on numerical integration is described. The distance dependence of the electrostatic potential for planar surfaces is given. The calculations provide the amount of cations tightly bound and the amount trapped in the double layer region. The competition between cations for binding to surfaces is elucidated.
AB - The binding of mono-, di- and trivalent cations to negatively charged surfaces is studied within the framework of a modified Gouy-Chapman equation. For any given combination of ions of the above valences, the existence and uniqueness of the solution for the surface potential is shown. The treatment provides the surface potential and charge density. For a system containing only monovalent and divalent ions, analytical solutions are given. When trivalent ions are also present, a procedure based on numerical integration is described. The distance dependence of the electrostatic potential for planar surfaces is given. The calculations provide the amount of cations tightly bound and the amount trapped in the double layer region. The competition between cations for binding to surfaces is elucidated.
UR - http://www.scopus.com/inward/record.url?scp=0019189071&partnerID=8YFLogxK
U2 - 10.1007/BF02464638
DO - 10.1007/BF02464638
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C2 - 7370443
AN - SCOPUS:0019189071
SN - 0007-4985
VL - 42
SP - 191
EP - 220
JO - Bulletin of Mathematical Biology
JF - Bulletin of Mathematical Biology
IS - 2
ER -