Iron complexes 8-quinolinol

Analytical Properties Separates phenols and EPA priority pollutants often used with metal ions (such as iron (III)) as chelate ligands 8-quinolinol has a high affinity for oxygen moieties and will form complexes with upwards of 60 metal ions often with an acidic aqueous mobile phase Reference 48-50... 

New complexes containing azo- and hydrazinato-derivatized Schiff base ligands298 375 continue to be used for the analytical determination of vanadium.376 The vanadium complex was characterized for the Schiff base derived from the condensation reaction of benzoyl acetone and Girard s reagent P.377 Azophenolates of mononuclear and mixed valence dinuclear species have been reported.378 Naphthanol- or quinolinol-derivatized ligands prefer to chelate iron over vanadium.379... 

Probably the most widely used procedure for trace metal analysis of seawater over the last 20 years has been preconcentration followed by ETAAS because of the wide availability, good sensitivity, and large range of elements that can be measured by this method. Preconcentration procedures have in general been one of three types. First, co-precipitation, with iron(III) hydroxide or cobalt pyrrolidinedithio-carbamate, being the most widely used co-precipit-ants. Second, cornplexation followed by solvent extraction with a number of different complexants, of which dithiocarbamates, 8-quinolinol, and dithi-zone are particularly popular, and with extraction into a range of solvents. The third approach is extraction on to a chelating column (usually Chelex-100 but recently also other complexants such... 

The synergistic inhibition effect of a sodium octylmercaptopropionate (SOMP), and 8-quinolinol (QI) mixture on the corrosion of iron in aerated 0.5 M Na2S04 was studied by polarization measurement, XPS, FTIR, and electron-probe microanalysis. X-ray photoelectron spectra of iron, oxygen, nitrogen, and sulfur revealed that the inhibited surface was covered with the chelate precipitate of QI and iron hydroxide and oxide, together with a trace amount of the OMP complex (Suzuki et al.,... 

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