Chromo- and fluoroionophores based on diaza-crown ethers for alkaline earth metal ions

Timothy L. Blair, Jayant Desai, Leonidas G Bachas

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)1823-1834
Number of pages12
JournalAnalytical Letters
Volume25
Issue number10
DOIs
StatePublished - Oct 1 1992
Externally publishedYes

Fingerprint

Hymecromone
Alkaline Earth Metals
Alizarin
Chromogenics
Ionophores
Crown Ethers
Alkaline earth metals
Crown ethers
Spectrophotometry
Metal ions
Calcium
Coloring Agents
Nitrogen
Dyes
Metals
Ions
Calcium Ionophores
Crowns
Limit of Detection
alizarin

Keywords

  • calcium
  • chromoionophore
  • fluoroionophore
  • magnesium

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Spectroscopy
  • Clinical Biochemistry
  • Biochemistry, medical
  • Electrochemistry

Cite this

Chromo- and fluoroionophores based on diaza-crown ethers for alkaline earth metal ions. / Blair, Timothy L.; Desai, Jayant; Bachas, Leonidas G.

In: Analytical Letters, Vol. 25, No. 10, 01.10.1992, p. 1823-1834.

Research output: Contribution to journalArticle

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