“…Many methods for the determination of vanadium have been described in the literature. These include spectrophotometry [ 4 , 5 , 6 , 7 ], spectrofluorometry [ 8 ], electrothermal atomic absorption spectroscopy (ETAAS) [ 9 , 10 , 11 , 12 ], graphite furnace atomic absorption spectroscopy (GFAAS) [ 13 , 14 , 15 , 16 , 17 , 18 ], neutron activation analysis (NAA) [ 19 ], inductively coupled plasma atomic emission spectrometry (ICP–AES) [ 20 , 21 ], inductively coupled plasma mass spectrometry (ICP–MS) [ 22 , 23 , 24 ] and inductively coupled plasma optical emission spectrometry (ICP–OES) [ 25 , 26 , 27 ]. The spectrophotometric and spectrofluorimetric methods suffer from low sensitivity values, the NAA method is time consuming and routine analysis of numerous samples is laborious.…”