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Micellar Electrokinetic Chromatographic Separation of Fe(II)/Fe(III) and Cu(I)/Cu(II) as 2-Pyridylazo Chelates

โœ Scribed by Slawomir Oszwaldowski; Tetsuo Okada

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
68 KB
Volume
62
Category
Article
ISSN
0026-265X

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โœฆ Synopsis

Fe(II)/Fe(III) and Cu(I)/Cu(II) are electrophoretically separated as chelates of 4-(2-pyridylazo)resorcinol (PAR), 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP), and 4-(3,5-dibromo-2-pyridylazo)-N-ethyl-N-(3-sulfopropyl)aniline (3,5-diBr-PAESA). Micellar media are suitable for the preservation of the original oxidation states of metal ions during the separations. Some essential aspects of these chelates, which are not clearly shown by spectrophotometric studies, are elucidated by the present separations.

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