Magnesium Ion Selective Electrodes Based On β-Diketone Compounds

Hitoshi Nagashima; Koji Tohda; Yasunori Matsunari; Yukihiro Tsunekawa; Kazuhiko Watanabe; Hidenari Inoue; Koji Suzuki

doi:10.1080/00032719008052543

Magnesium Ion Selective Electrodes Based On β-Diketone Compounds

Hitoshi Nagashima, Koji Tohda, Yasunori Matsunari, Yukihiro Tsunekawa, Kazuhiko Watanabe, Hidenari Inoue, Koji Suzuki

Department of Applied Chemistry

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

12 Citations (Scopus)

Abstract

The ion selectivities for poly(vinyl chloride) (PVC)-matrix membrane ion-selective electrodes based on seven lipophilic diketone compounds were examined. All the electrodes based on the tested five β-diketone cdmpounds exhibited clear Mg₂_. - selectivity under high pH conditions(pH10). Especially, the electrode based on 2-acetyl-l-tetralone shows excellent Mg₂_. -se1ectivity, and the selectivity coefficients of the Mg₂₊ -electrode to Ca₂₊, K₊ and Na₊(log [formula omitted] log [formula omitted] and log [formula omitted]) in pH 10 solution were -2.2, -1.9 and -2.7, respectively. This electrode gave a response slope of about 60 mV/pMg₂₊ ranging from 1 Χ 10_-4 to 2 Χ 10_-2 M Mg₂₊, which corresponds to twice the usual Nernstian theoretical response slope for the divalent cation. This phenomenon is advantageous for the accurate determination of Mg₂₊.

Original language	English
Pages (from-to)	1993-2004
Number of pages	12
Journal	Analytical Letters
Volume	23
Issue number	11
DOIs	https://doi.org/10.1080/00032719008052543
Publication status	Published - 1990 Nov

Keywords

diketone
ion-selective electrode
magnesium
selectivity

ASJC Scopus subject areas

Analytical Chemistry
Biochemistry
Spectroscopy
Clinical Biochemistry
Biochemistry, medical
Electrochemistry

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10.1080/00032719008052543

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title = "Magnesium Ion Selective Electrodes Based On β-Diketone Compounds",

abstract = "The ion selectivities for poly(vinyl chloride) (PVC)-matrix membrane ion-selective electrodes based on seven lipophilic diketone compounds were examined. All the electrodes based on the tested five β-diketone cdmpounds exhibited clear Mg2. - selectivity under high pH conditions(pH10). Especially, the electrode based on 2-acetyl-l-tetralone shows excellent Mg2. -se1ectivity, and the selectivity coefficients of the Mg2+ -electrode to Ca2+, K+ and Na+(log [formula omitted] log [formula omitted] and log [formula omitted]) in pH 10 solution were -2.2, -1.9 and -2.7, respectively. This electrode gave a response slope of about 60 mV/pMg2+ ranging from 1 Χ 10-4 to 2 Χ 10-2 M Mg2+, which corresponds to twice the usual Nernstian theoretical response slope for the divalent cation. This phenomenon is advantageous for the accurate determination of Mg2+.",

keywords = "diketone, ion-selective electrode, magnesium, selectivity",

author = "Hitoshi Nagashima and Koji Tohda and Yasunori Matsunari and Yukihiro Tsunekawa and Kazuhiko Watanabe and Hidenari Inoue and Koji Suzuki",

year = "1990",

month = nov,

doi = "10.1080/00032719008052543",

language = "English",

volume = "23",

pages = "1993--2004",

journal = "Analytical Letters",

issn = "0003-2719",

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T1 - Magnesium Ion Selective Electrodes Based On β-Diketone Compounds

AU - Nagashima, Hitoshi

AU - Tohda, Koji

AU - Matsunari, Yasunori

AU - Tsunekawa, Yukihiro

AU - Watanabe, Kazuhiko

AU - Inoue, Hidenari

AU - Suzuki, Koji

PY - 1990/11

Y1 - 1990/11

N2 - The ion selectivities for poly(vinyl chloride) (PVC)-matrix membrane ion-selective electrodes based on seven lipophilic diketone compounds were examined. All the electrodes based on the tested five β-diketone cdmpounds exhibited clear Mg2. - selectivity under high pH conditions(pH10). Especially, the electrode based on 2-acetyl-l-tetralone shows excellent Mg2. -se1ectivity, and the selectivity coefficients of the Mg2+ -electrode to Ca2+, K+ and Na+(log [formula omitted] log [formula omitted] and log [formula omitted]) in pH 10 solution were -2.2, -1.9 and -2.7, respectively. This electrode gave a response slope of about 60 mV/pMg2+ ranging from 1 Χ 10-4 to 2 Χ 10-2 M Mg2+, which corresponds to twice the usual Nernstian theoretical response slope for the divalent cation. This phenomenon is advantageous for the accurate determination of Mg2+.

AB - The ion selectivities for poly(vinyl chloride) (PVC)-matrix membrane ion-selective electrodes based on seven lipophilic diketone compounds were examined. All the electrodes based on the tested five β-diketone cdmpounds exhibited clear Mg2. - selectivity under high pH conditions(pH10). Especially, the electrode based on 2-acetyl-l-tetralone shows excellent Mg2. -se1ectivity, and the selectivity coefficients of the Mg2+ -electrode to Ca2+, K+ and Na+(log [formula omitted] log [formula omitted] and log [formula omitted]) in pH 10 solution were -2.2, -1.9 and -2.7, respectively. This electrode gave a response slope of about 60 mV/pMg2+ ranging from 1 Χ 10-4 to 2 Χ 10-2 M Mg2+, which corresponds to twice the usual Nernstian theoretical response slope for the divalent cation. This phenomenon is advantageous for the accurate determination of Mg2+.

KW - diketone

KW - ion-selective electrode

KW - magnesium

KW - selectivity

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U2 - 10.1080/00032719008052543

DO - 10.1080/00032719008052543

M3 - Article

AN - SCOPUS:0025668059

SN - 0003-2719

VL - 23

SP - 1993

EP - 2004

JO - Analytical Letters

JF - Analytical Letters

IS - 11

ER -

Magnesium Ion Selective Electrodes Based On β-Diketone Compounds

Abstract

Keywords

ASJC Scopus subject areas

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