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Department of Chemistry, Kurukshetra University, Kurukshetra-136 119, Haryana, India Manuscript received 26 April 1999. revised 27 September 1999. accepted 12 February 2000 A simple and sensitive spectrophotometric method for the determination of vanadium(v) has been developed using 6-chloro-3-bydroxy-2-[2'-(5'-metbylfuryl)]-4H-chromen-4-one as a complexing ligand. The dark yellow (1 : 1) coloured species extracted into chloroform from 0.3 M CH3COOH medium shows λmax at 432 nm. The method is free from the interference of a large number of elements especially the platinum metals. It obeys Beer's law in the range of 0.2-1.4 µg ml-1 Vv with molar absorptivity and Sandell's sensitivity of 3.98 x 104 dm3 mol-1 cm-1 and 0.0012 µg cm-1, respectively. Analysis of various synthetic and technical samples has been carried out with satisfactory and reproducible results.
molar absorptivity, Synthetic samples, Effect of diverse ions, CHMFC solution
molar absorptivity, Synthetic samples, Effect of diverse ions, CHMFC solution
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