Abstract
Competitive adsorption to a negative surface between monovalent and divalent cations is studied in a closed system. A self-consistent theory is presented for the cases when the divalent cation binds to two negative sites (1:2 binding) and to one negative site (1:1 binding). It is demonstrated that these two cases are distinguishable when the relative difference in total divalent concentrations determined at fixed bulk divalent concentrations is plotted as a function of the bulk monovalent concentration. The 1:2 binding case yields a sigmoidal curve while the 1:1 binding curve is hyperbolic. The comparison between the 1:2 and 1:1 binding cases of the divalent cation is extended to include; (1) the existence of a surface charge to which no binding occurs, and (2) the case when an additional non-binding monovalent cation is present.
| Original language | English |
|---|---|
| Pages (from-to) | 633-649 |
| Number of pages | 17 |
| Journal | Journal of Theoretical Biology |
| Volume | 94 |
| Issue number | 3 |
| DOIs | |
| State | Published - Feb 7 1982 |
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ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
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Mono- and divalent competitive adsorption to a charged membrane in a closed system : A comparative study. / Kolber, Michael A.
In: Journal of Theoretical Biology, Vol. 94, No. 3, 07.02.1982, p. 633-649.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Mono- and divalent competitive adsorption to a charged membrane in a closed system
T2 - A comparative study
AU - Kolber, Michael A
PY - 1982/2/7
Y1 - 1982/2/7
N2 - Competitive adsorption to a negative surface between monovalent and divalent cations is studied in a closed system. A self-consistent theory is presented for the cases when the divalent cation binds to two negative sites (1:2 binding) and to one negative site (1:1 binding). It is demonstrated that these two cases are distinguishable when the relative difference in total divalent concentrations determined at fixed bulk divalent concentrations is plotted as a function of the bulk monovalent concentration. The 1:2 binding case yields a sigmoidal curve while the 1:1 binding curve is hyperbolic. The comparison between the 1:2 and 1:1 binding cases of the divalent cation is extended to include; (1) the existence of a surface charge to which no binding occurs, and (2) the case when an additional non-binding monovalent cation is present.
AB - Competitive adsorption to a negative surface between monovalent and divalent cations is studied in a closed system. A self-consistent theory is presented for the cases when the divalent cation binds to two negative sites (1:2 binding) and to one negative site (1:1 binding). It is demonstrated that these two cases are distinguishable when the relative difference in total divalent concentrations determined at fixed bulk divalent concentrations is plotted as a function of the bulk monovalent concentration. The 1:2 binding case yields a sigmoidal curve while the 1:1 binding curve is hyperbolic. The comparison between the 1:2 and 1:1 binding cases of the divalent cation is extended to include; (1) the existence of a surface charge to which no binding occurs, and (2) the case when an additional non-binding monovalent cation is present.
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U2 - 10.1016/0022-5193(82)90304-6
DO - 10.1016/0022-5193(82)90304-6
M3 - Article
C2 - 7078221
AN - SCOPUS:0020072001
VL - 94
SP - 633
EP - 649
JO - Journal of Theoretical Biology
JF - Journal of Theoretical Biology
SN - 0022-5193
IS - 3
ER -