N Alizadeh - Department of Chemistry, University of Guilan, P.B.41335-1914, Rasht, Iran
S Momen Qazvini - Department of Chemistry, University of Guilan, P.B.41335-1914, Rasht, Iran

Vanadium is an important element in environmental and biological studies[1]. A variety of methods have been used for determination of vanadium; these include fluorometry, gaschromatography, x-ray fluorescence spectrometry, emission spectrometry and atomicabsorption spectroscopy. These methods either lack sufficient sensitivity and timeconsuming. In order to overcome these problems, catalytic spectroscopy is recommended [2- 4].