N-phenylcinnamohydroxamio Acid As An Analytical Rlagent For Solvent Extraction And Spectrometric Determination Of Vanadium (v)
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N-phenylcinnamohydroxamic acid (PORA) has beenrnfound to form a convenient extraction system forrnuRnadium (V) in presence of p-chlorophenol and also inrnSON media. PORA reacts with vanadium (V) to give arn1:2 complex (having a broad peak around 54-0 nm withrn6200 litres/mole/cm). In the presence of an adductrnforming substance (p-chlorophenol) synergic extractionrnof the metal and marked absorbance enhancement intornchloroform have been observed on the basis of formationrnand hyper and bathochromic shift of the hydrophobicrnspecies formed. Similar effect is seen in the mixedrnligand complex system. The complexes are found tornhave the composition 1:2:1 or 1:2:2 (V: POUA: PhOR)rndepending upon the nmount of p-chlorollhenol availablernduring the reaction; and 1:2;2 (V: PORA: bOn) mixed
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