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An anomalous behavior of anion-exchange membranes with low concentration of quaternary ammonium sites : An apparent selectivity to bicarbonate and phosphate, and its true nature. / Grekovich, Alexander L.; Mikhelson, Konstantin N.

In: Electroanalysis, Vol. 14, No. 19-20, 11.2002, p. 1391-1396.

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

Harvard

Grekovich, AL & Mikhelson, KN 2002, 'An anomalous behavior of anion-exchange membranes with low concentration of quaternary ammonium sites: An apparent selectivity to bicarbonate and phosphate, and its true nature', Electroanalysis, vol. 14, no. 19-20, pp. 1391-1396. https://doi.org/10.1002/1521-4109(200211)14:19/20<1391::AID-ELAN1391>3.0.CO;2-S

APA

Grekovich, A. L., & Mikhelson, K. N. (2002). An anomalous behavior of anion-exchange membranes with low concentration of quaternary ammonium sites: An apparent selectivity to bicarbonate and phosphate, and its true nature. Electroanalysis, 14(19-20), 1391-1396. https://doi.org/10.1002/1521-4109(200211)14:19/20<1391::AID-ELAN1391>3.0.CO;2-S

Vancouver

Grekovich AL, Mikhelson KN. An anomalous behavior of anion-exchange membranes with low concentration of quaternary ammonium sites: An apparent selectivity to bicarbonate and phosphate, and its true nature. Electroanalysis. 2002 Nov;14(19-20):1391-1396. https://doi.org/10.1002/1521-4109(200211)14:19/20<1391::AID-ELAN1391>3.0.CO;2-S

Author

Grekovich, Alexander L. ; Mikhelson, Konstantin N. / An anomalous behavior of anion-exchange membranes with low concentration of quaternary ammonium sites : An apparent selectivity to bicarbonate and phosphate, and its true nature. In: Electroanalysis. 2002 ; Vol. 14, No. 19-20. pp. 1391-1396.

BibTeX

@article{9d56d2ff390b4f09baceca06ef6ff237,
title = "An anomalous behavior of anion-exchange membranes with low concentration of quaternary ammonium sites: An apparent selectivity to bicarbonate and phosphate, and its true nature",
abstract = "It is shown that anion-selective electrodes with low concentration of quaternary ammonium sites exhibit an apparent response and selectivity to HCO3- and HPO42- ions in aqueous solutions. It is, however, detected that none of these ions is the potential-determining, and the electrodes actually respond to OH-. The selectivity to OH- is due to unidentified anionic impurities in the plasticizer, and vanishes with aging of the electrodes. Additional purification of the plasticizer eliminates the selectivity to OH-, which, however, is restored after intentional addition of negatively charged sites. Quaternary ammonium sites with longer alkyl chains provide higher selectivity to OH- suggesting that this selectivity originates from steric hindrances against bigger anions.",
keywords = "Apparent response to HCO and HPO, Ion-selective electrodes, Quaternary ammonium sites, True response to OH",
author = "Grekovich, {Alexander L.} and Mikhelson, {Konstantin N.}",
year = "2002",
month = nov,
doi = "10.1002/1521-4109(200211)14:19/20<1391::AID-ELAN1391>3.0.CO;2-S",
language = "English",
volume = "14",
pages = "1391--1396",
journal = "Electroanalysis",
issn = "1040-0397",
publisher = "Wiley-Blackwell",
number = "19-20",

}

RIS

TY - JOUR

T1 - An anomalous behavior of anion-exchange membranes with low concentration of quaternary ammonium sites

T2 - An apparent selectivity to bicarbonate and phosphate, and its true nature

AU - Grekovich, Alexander L.

AU - Mikhelson, Konstantin N.

PY - 2002/11

Y1 - 2002/11

N2 - It is shown that anion-selective electrodes with low concentration of quaternary ammonium sites exhibit an apparent response and selectivity to HCO3- and HPO42- ions in aqueous solutions. It is, however, detected that none of these ions is the potential-determining, and the electrodes actually respond to OH-. The selectivity to OH- is due to unidentified anionic impurities in the plasticizer, and vanishes with aging of the electrodes. Additional purification of the plasticizer eliminates the selectivity to OH-, which, however, is restored after intentional addition of negatively charged sites. Quaternary ammonium sites with longer alkyl chains provide higher selectivity to OH- suggesting that this selectivity originates from steric hindrances against bigger anions.

AB - It is shown that anion-selective electrodes with low concentration of quaternary ammonium sites exhibit an apparent response and selectivity to HCO3- and HPO42- ions in aqueous solutions. It is, however, detected that none of these ions is the potential-determining, and the electrodes actually respond to OH-. The selectivity to OH- is due to unidentified anionic impurities in the plasticizer, and vanishes with aging of the electrodes. Additional purification of the plasticizer eliminates the selectivity to OH-, which, however, is restored after intentional addition of negatively charged sites. Quaternary ammonium sites with longer alkyl chains provide higher selectivity to OH- suggesting that this selectivity originates from steric hindrances against bigger anions.

KW - Apparent response to HCO and HPO

KW - Ion-selective electrodes

KW - Quaternary ammonium sites

KW - True response to OH

UR - http://www.scopus.com/inward/record.url?scp=0036854842&partnerID=8YFLogxK

U2 - 10.1002/1521-4109(200211)14:19/20<1391::AID-ELAN1391>3.0.CO;2-S

DO - 10.1002/1521-4109(200211)14:19/20<1391::AID-ELAN1391>3.0.CO;2-S

M3 - Article

AN - SCOPUS:0036854842

VL - 14

SP - 1391

EP - 1396

JO - Electroanalysis

JF - Electroanalysis

SN - 1040-0397

IS - 19-20

ER -

ID: 92359048