Selective Spectrophotometric Determination of Vanadium (II) in the Presence of 35 Common Cations by Means of Di-2-Pyridyl Ketone 2-Pyridylhydrazone (DPPH)
Abstract
DPPH was tested with 36 cations in slightly acidic medium, in the presence, of EDTA but only vanadium(II) formed a stable red complex. Based on these effects a method was worked out for the selective spectrophotometric determination of vanadium(II) in the presence of the remaining tested cations. A comparison of the sensitivity and selectivity of this method with recently reported methods is presented.
Keywords: Vanadium; Di-2-pyridyl Ketone 2-Pyridylhydrazone; DPPH
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