Study of New Selective Reagent Acetophenone 2’, 4’- Dihydroxy Semicarbazone for Extractive Spectrophotometric Determination of Vanadium

Acetophenone 2’, 4’dihydroxy semicarbazone [A24DHS], a new analytical reagent is proposed as a sensitive and selective spectrophotometric reagent for Vanadium (V). The reagent A24DHS is synthesized in the laboratory and characterized by NMR, IR and elemental analysis. A selective spectrophotometric method is presented for the trace determination of Vanadium using A24DHS as spectrophotometric reagent (λmax = 380 nm) in basic aqueous solution (pH = 8.2). The Beer’s law is obeyed in the concentration range from 1 to 5 ppm. The A24DHS forms a 1:2 yellow colored complex. The Sandell’s Sensitivity is 0.0288 μg cm with molar absorptivity 3899.2 L mol cm. The proposed method has been successfully applied to the determination of Vanadium alloys and synthetic samples. The precision and the accuracy obtained were satisfactory for its use in the concerned industry.