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Modeling of divalent/monovalent ion selectivity of ion-exchanger-based solvent polymeric membranes doped with coexchanger. / Mikhelson, K. N.; Lewenstam, A.

In: Analytical Chemistry, Vol. 72, No. 20, 15.10.2000, p. 4965-4972.

Research output: Contribution to journal › Article › peer-review

Harvard

Mikhelson, KN & Lewenstam, A 2000, 'Modeling of divalent/monovalent ion selectivity of ion-exchanger-based solvent polymeric membranes doped with coexchanger', Analytical Chemistry, vol. 72, no. 20, pp. 4965-4972. https://doi.org/10.1021/ac991317o

APA

Mikhelson, K. N., & Lewenstam, A. (2000). Modeling of divalent/monovalent ion selectivity of ion-exchanger-based solvent polymeric membranes doped with coexchanger. Analytical Chemistry, 72(20), 4965-4972. https://doi.org/10.1021/ac991317o

Vancouver

Mikhelson KN, Lewenstam A. Modeling of divalent/monovalent ion selectivity of ion-exchanger-based solvent polymeric membranes doped with coexchanger. Analytical Chemistry. 2000 Oct 15;72(20):4965-4972. https://doi.org/10.1021/ac991317o

Author

Mikhelson, K. N. ; Lewenstam, A. / Modeling of divalent/monovalent ion selectivity of ion-exchanger-based solvent polymeric membranes doped with coexchanger. In: Analytical Chemistry. 2000 ; Vol. 72, No. 20. pp. 4965-4972.

BibTeX

@article{9dfdd454987f446e8e954ba96f4d978f,
title = "Modeling of divalent/monovalent ion selectivity of ion-exchanger-based solvent polymeric membranes doped with coexchanger",
abstract = "It is shown that the addition of a coexchanger does not always improve the selectivity of an ion-selective electrode. As a model case, the selectivity toward divalent primary ions I2+ in the presence of monovalent interference J+ is numerically simulated for membranes based onion-exchanger R- and doped with a coexchanger (ionic additive) S+. It is, for the first time, demonstrated that the addition of a coexchanger, together with a high mobility of ion-exchanger sites, may be either beneficial or harmful to selectivity. Accordingly, two distinctive representatives of systems, i.e., membrane/solution are discussed. The theory is illustrated with experimental data obtained from PVC membranes based on calcium bis(2ethylhexyl)-phosphate plasticized with tris(2ethylhexyl)phosphate and doped with tetradecylammonium. Electrodes with these membranes exhibit both types of selectivity behavior. Interference from lithium with a calcium response may be sufficiently decreased by the addition of tetradecylammonium, while the interference from potassium and cesium was increased in the doped membranes.",
author = "Mikhelson, {K. N.} and A. Lewenstam",
year = "2000",
month = oct,
day = "15",
doi = "10.1021/ac991317o",
language = "English",
volume = "72",
pages = "4965--4972",
journal = "Industrial And Engineering Chemistry Analytical Edition",
issn = "0003-2700",
publisher = "American Chemical Society",
number = "20",

}

RIS

TY - JOUR

T1 - Modeling of divalent/monovalent ion selectivity of ion-exchanger-based solvent polymeric membranes doped with coexchanger

AU - Mikhelson, K. N.

AU - Lewenstam, A.

PY - 2000/10/15

Y1 - 2000/10/15

N2 - It is shown that the addition of a coexchanger does not always improve the selectivity of an ion-selective electrode. As a model case, the selectivity toward divalent primary ions I2+ in the presence of monovalent interference J+ is numerically simulated for membranes based onion-exchanger R- and doped with a coexchanger (ionic additive) S+. It is, for the first time, demonstrated that the addition of a coexchanger, together with a high mobility of ion-exchanger sites, may be either beneficial or harmful to selectivity. Accordingly, two distinctive representatives of systems, i.e., membrane/solution are discussed. The theory is illustrated with experimental data obtained from PVC membranes based on calcium bis(2ethylhexyl)-phosphate plasticized with tris(2ethylhexyl)phosphate and doped with tetradecylammonium. Electrodes with these membranes exhibit both types of selectivity behavior. Interference from lithium with a calcium response may be sufficiently decreased by the addition of tetradecylammonium, while the interference from potassium and cesium was increased in the doped membranes.

AB - It is shown that the addition of a coexchanger does not always improve the selectivity of an ion-selective electrode. As a model case, the selectivity toward divalent primary ions I2+ in the presence of monovalent interference J+ is numerically simulated for membranes based onion-exchanger R- and doped with a coexchanger (ionic additive) S+. It is, for the first time, demonstrated that the addition of a coexchanger, together with a high mobility of ion-exchanger sites, may be either beneficial or harmful to selectivity. Accordingly, two distinctive representatives of systems, i.e., membrane/solution are discussed. The theory is illustrated with experimental data obtained from PVC membranes based on calcium bis(2ethylhexyl)-phosphate plasticized with tris(2ethylhexyl)phosphate and doped with tetradecylammonium. Electrodes with these membranes exhibit both types of selectivity behavior. Interference from lithium with a calcium response may be sufficiently decreased by the addition of tetradecylammonium, while the interference from potassium and cesium was increased in the doped membranes.

UR - http://www.scopus.com/inward/record.url?scp=0034667909&partnerID=8YFLogxK

U2 - 10.1021/ac991317o

DO - 10.1021/ac991317o

M3 - Article

AN - SCOPUS:0034667909

VL - 72

SP - 4965

EP - 4972

JO - Industrial And Engineering Chemistry Analytical Edition

JF - Industrial And Engineering Chemistry Analytical Edition

SN - 0003-2700

IS - 20

ER -

ID: 92360620