Extract-photometric determination of vanadium(V) with 3-indole-acetohydroxamic acid

The use of principal component regression (PCR) for the multicomponent analysis of complex mixtures offers considerable advantages over conventional multiple linear regression in ultraviolet-visible spectrophotometry . PCR provides a sensitive and accurate technique for the analysis of complex mixtures with severely overlapping spectra. A method for the simultaneous determination of F@+ and Mn2+ is described based on the measurement of the absorbance of the complexes formed by both ions with 3indolylacetohydroxamic acid. The complexes were extracted with a solution of methyltrioctylammonium chloride in toluene. The application of the PCR multivariate calibration method allowed the resolution of the overlapping of the spectra of the respective Fe3+ and Mn2+ complexes with the hydroxamic acid derivative. The method was applied satisfactorily to the determination of F@+ and Mn2+ in several multivitamin preparations.

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Extract-photometric determination of vanadium(V) with 3-indole-acetohydroxamic acid

Cited by 2 publications

References 11 publications

Use of Oximes, Hydroxamic Acids and Related Species as Reagents in Inorganic Analytical Chemistry*This chapter is dedicated to the memory of Professor Nicholas D. Cheronis, organic chemist and educator who pioneered semimicroanalysis.

Use of Oximes, Hydroxamic Acids and Related Species as Reagents in Inorganic Analytical Chemistry*This chapter is dedicated to the memory of Professor Nicholas D. Cheronis, organic chemist and educator who pioneered semimicroanalysis.

Spectrophotometric determination of mixtures of iron(III) and manganese(II) by complexation with 3-indolylacetohydroxamic acid and principal component regression multivariate calibration

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