EXTRACTIVE SPECTROPHOTOMETRIC DETERMINATION OF VANADIUM WITH ANTHRANILIC ACID IN PRESENCE OF PYRIDINE | ||
| Journal of Sciences, Islamic Republic of Iran | ||
| مقاله 4، دوره 1، شماره 5، 1990 اصل مقاله (301.55 K) | ||
| چکیده | ||
| Vanadium (III) gives a greenish- yellow complex with anthranilic acid in presence of pyridine. The complex is extractable with chloroform and is used for photometric determination of vanadium by measuring the absorbance at 390 nm against a reagent blank. Beer's Law holds good in the range of 1-20 pg V/ml. Moderate amounts of Pb (II) , Ca (II) , Sr (II) , Ba (II) , Cd (II) , Mg (II) , Mn (II) , Ni (II) , Co (II) , Cu (II) , Zn (II) and limited amounts of W (VI), A1 (III), Th (IV), Zr (IV), Sn (II), Sb (III), Ti(IV), Fe (III), and Cr (VI) can be tolerated. U (VI) and Mo (VI) interfere | ||
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