Substitutional complexometric determination of magnesium in homogeneous water-dioxan medium, based on decomposition of MgEDTA with 8-quinolinol and titration of released EDTA with calcium.
A method based on a substitution reaction between MgEDTA and 8-quinolinol, and titration of the liberated EDTA with calcium is proposed. The reaction is performed in homogeneous 50%-60% dioxan medium at ph 10, in which magnesium forms a soluble and stable 8-quinolinol complex.
Karolev
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Institue of Ferrous Metallurgy, Sofia 1870, Bulgaria.