MAGNESIUM-ION SELECTIVE ELECTRODES BASED ON BETA-DIKETONE COMPOUNDS

被引：11

作者：

NAGASHIMA, H ^{[1
]}

TOHDA, K ^{[1
]}

MATSUNARI, Y ^{[1
]}

TSUNEKAWA, Y ^{[1
]}

WATANABE, K ^{[1
]}

INOUE, H ^{[1
]}

SUZUKI, K ^{[1
]}

机构：

[1] KEIO UNIV,DEPT APPL CHEM,3-14-1 HIYOSHI,KOHOKU KU,YOKOHAMA,KANAGAWA 223,JAPAN

来源：

ANALYTICAL LETTERS | 1990年 / 23卷 / 11期

关键词：

DIKETONE; ION-SELECTIVE ELECTRODE; MAGNESIUM; SELECTIVITY;

D O I：

10.1080/00032719008052543

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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 beta-diketone compounds exhibited clear Mg2+-selectivity under high pH conditions (pH10). Especially, the electrode based on 2-acetyl-1-tetralone shows excellent Mg2+-selectivity, and the selectivity coefficients of the Mg2+-electrode to Ca2+, K+ and Na+ (log K(Mg,Ca)pot, log K(Mg,K)pot and log K(Mg,Na)pot 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 x 10(-4) to 2 x 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+.

引用

页码：1993 / 2004

页数：12

共 8 条

[1] CYCLIC OCTAPEPTIDES AND DECAPEPTIDES AS IONOPHORES FOR MAGNESIUM [J].

BEHM, F ;

AMMANN, D ;

SIMON, W ;

BRUNFELDT, K ;

HALSTROM, J .

HELVETICA CHIMICA ACTA, 1985, 68 (01) :110-118

[2]

Mehrotra R.C., 1978, METAL BETA DIKETONAT

[3] NEUTRAL-CARRIER-BASED MAGNESIUM-SELECTIVE ELECTRODE [J].

ROUILLY, MV ;

BADERTSCHER, M ;

PRETSCH, E ;

SUTER, G ;

SIMON, W .

ANALYTICAL CHEMISTRY, 1988, 60 (19) :2013-2016

[4] ION-SELECTIVE ELECTRODES BASED ON NATURAL CARBOXYLIC POLYETHER ANTIBIOTICS [J].

SUZUKI, K ;

TOHDA, K ;

ARUGA, H ;

MATSUZOE, M ;

INOUE, H ;

SHIRAI, T .

ANALYTICAL CHEMISTRY, 1988, 60 (17) :1714-1721

[5]

WATANABE K, 1988, REV POLAROGR, V34, P59

[6]

WATANABE K, 1990, THESIS KEIO U

[7]

1976, PURE APPL CHEM, V48, P129

[8]

1981, JIS K0122 JAP STAND

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