CHROMOIONOPHORE AND FLUOROIONOPHORES BASED ON DIAZA-CROWN ETHERS FOR ALKALINE-EARTH METAL-IONS

被引：10

作者：

BLAIR, TL

DESAI, J

BACHAS, LG

机构：

[1] Department of Chemistry, University of Kentucky, Lexington

来源：

ANALYTICAL LETTERS | 1992年 / 25卷 / 10期

基金：

美国国家科学基金会;

关键词：

CHROMOIONOPHORE; FLUOROIONOPHORE; CALCIUM; MAGNESIUM;

D O I：

10.1080/00032719208018255

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Two new metal-selective dyes were synthesized and used to develop methods for determining Ca2+ and Mg2+. A chromogenic diaza-18-crown-6 with an alizarin group at each crown nitrogen is a calcium-selective ionophore used for extraction-spectrophotometry. The detection limit for the technique is 1 x 10(-5) M Ca2+. Fluorometric determination of Mg2+ is performed using a diaza-15-crown-5 derivatized with two methylumbelliferone groups. This method allows for the one-phase determination of Mg2+ down to 7 x 10(-6) M.

引用

页码：1823 / 1834

页数：12

共 14 条

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