Novel voltammetric methods for vanadium determination by exploitation of catalytic adsorptive vanadium–chloranilic acid–bromate system

Adsorptive stripping voltammetric determination of vanadium(V) witch chloranilic acid using cyclic renewable mercury film silver based electrode

“…The sensitivity 158 (nA nM À1 ) and detection limit (0.5 ng L À1 ) of vanadium determination by means of Hg(Ag)FE are comparable to catalytic-adsorptive process proposed by Bobrowski and co-workers [16]. But proposed herein procedure is simpler and the time of a single determination is shorter.…”

“…In the group of voltammetry the stripping methods such as adsorptive stripping voltammetry witch different complexing agents, such as catechol [11], cupferron [12,13], Solchrome Violet RS [14], chloranilic acid [15] or adsorptive stripping voltammetry with catalytic effects [16,17] are used.…”

Catalytic-adsorptive determination of vanadium in solutions of 2,3-dihydroxybenzaldehide and bromate-ions

“…Therefore, for the determination of vanadium it is often indispensable to use more stable ligands, and bromate is utilized typically as an oxidant [2,[15][16][17] since in the presence of such strong oxidant as vanadate is, other oxidants, except for bromate, cannot re-oxidize the reduced vanadium form.…”

Determination of trace vanadium(V) by adsorptive anodic stripping voltammetry on an acetylene black paste electrode in the presence of alizarin violet

“…Specifically, adsorptive stripping voltammetry (AdSV) and catalytic adsorptive stripping voltammetry (CAdSV), based on the interfacial accumulation and voltammetric determination of metal complexes, has been shown useful for determining vanadium in various matrices [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]26]. Different complexing agents, such as 2,3-dihydroxynaphthalene [10], cupferron [11,12], chloranilic acid [13][14][15], catechol [16], 2-(5 0 -bromo-2 0 -pyridylazo)-5-diethylaminophenol [17,18], pyrogallol [19], 2-(2 0 -thiazolylaloz)-p-cresol [20], pyrocatechol violet [21] and solochrome violet RS [22] have been proposed. However, a limitation of these AdSV and CAdSV protocols, is their requirement for mercury electrodes.…”