Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Improvement of potentiometric selectivity of ion-exchanger based membranes doped with co-exchanger : Origin of the effect. / Mikhelson, Konstantin N.; Lewenstam, Andrzej.
в: Sensors and Actuators, B: Chemical, Том 48, № 1-3, 30.05.1998, стр. 344-350.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Improvement of potentiometric selectivity of ion-exchanger based membranes doped with co-exchanger
T2 - Origin of the effect
AU - Mikhelson, Konstantin N.
AU - Lewenstam, Andrzej
PY - 1998/5/30
Y1 - 1998/5/30
N2 - A novel equation is derived to describe the electric potential and selectivity of membranes which contain ion-exchanger and some co-exchanger. Numeric simulation of the potentials and that of concentrations of species in the membranes allows elucidation of the origin of the co-exchanger effect on potentiometric selectivity. It is shown that the elimination of the diffusion potential due to addition of co-exchanger is the main source of the beneficial effect of such additives. Another important feature of these membranes is the stabilization of the concentration of free ion-exchanging sites and their excess relative to ions. As a result, the potentiometric selectivity of membranes doped with co-exchanger becomes proportional to the association selectivity of ion-exchanging sites.
AB - A novel equation is derived to describe the electric potential and selectivity of membranes which contain ion-exchanger and some co-exchanger. Numeric simulation of the potentials and that of concentrations of species in the membranes allows elucidation of the origin of the co-exchanger effect on potentiometric selectivity. It is shown that the elimination of the diffusion potential due to addition of co-exchanger is the main source of the beneficial effect of such additives. Another important feature of these membranes is the stabilization of the concentration of free ion-exchanging sites and their excess relative to ions. As a result, the potentiometric selectivity of membranes doped with co-exchanger becomes proportional to the association selectivity of ion-exchanging sites.
KW - Additives
KW - Computer simulation
KW - Exchanger
KW - ISE
KW - Selectivity
UR - http://www.scopus.com/inward/record.url?scp=0347649429&partnerID=8YFLogxK
U2 - 10.1016/S0925-4005(98)00069-0
DO - 10.1016/S0925-4005(98)00069-0
M3 - Article
AN - SCOPUS:0347649429
VL - 48
SP - 344
EP - 350
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
SN - 0925-4005
IS - 1-3
ER -
ID: 92360841