Spectrophotometric Application for pH Dependent Determination of Vanadium (IV) Complexed with Thiophene-2-Carboxaldehyde Thiosemicarbazone by SPS Method

A new thiosemicarbazone based-sorbent matrix with sensitive selectivity and accurate spectrophotometric method was proposed for the determination of vanadium (IV) using thiophene-2carboxaldehyde thiosemicarbazone. In our earlier paper we have reported the synthesis, complexetion and analytical data of the sorbent material. It is also characterized by FAB-Mass, IR-spectra, UV-Vis spectroscopy and magnetic behaviour. In the present work we report here the advantages for using thiophene-2carboxaldehyde thiosemicarbazone as a reagent for the spectrophotometric determination of vanadium (IV). Several extractive parameters that considered for the extraction such as pH, contact time, effect of temperature, effect of diverse ions, effect of metal ion concentration and desorption of the metal ion were studied, The results showed that the sorbent material has a special selectivity and high adsorption capacity for vanadium (IV) from aqueous samples. The quantitative recovery of V (IV) was achieved by using 1(M) EDTA solutions. The proposed method has been applied for the determination of vanadium (IV) in different water samples.