Studies of reagents for spectrophotometric measurement of ionic magnesium
- 15 November 1977
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 55 (22) , 3909-3914
- https://doi.org/10.1139/v77-554
Abstract
Four mono-azo aryl dyes having the o-carboxy-o′-hydroxy functionality were investigated as reagents for the measurement of ionic Mg2+ in solutions containing complexing ligands. 2-(2′-Carboxyl-1′-benzeneazo)-1,8-dihydroxynaphthalene-3,6-disulfonic acid came closest to the ideal of having absorbance unaffected by pH over the pH range of interest and of differentiating between Ca2+ and Mg2+ complex formation. Ligand acid dissociation constants and formation constants for the metal–ligand complexes were measured.This publication has 1 reference indexed in Scilit:
- Determination of free magnesiumAnalytical Biochemistry, 1966