Lanthanum-impregnated zeolite modified carbon paste electrode for determination of Cadmium (II)

Glassy Carbon Electrodes Modified with Ordered Mesoporous Silica for the Electrochemical Detection of Cadmium Ions

“…The electrolyte solution was 0.1 M phosphate buffer (adjusted at pH 4.4 and 6). The two pH values were selected, according to literature data, , in order to find the best working conditions, taking into account that the behavior of −NH 2 -containing silica powders is influenced by the acidity of the buffer solution. pH values above 6.0 can decrease the electrode signal noticeably, as Cd­(II) ions would precipitate as hydroxide sediments .…”

Degradation of pollutants in water by Fenton-like oxidation over LaFe-catalysts: Optimization by experimental design

“…The presence of La species in the La-mordonite electrode was also studied by X and al. the authors mentioned that enhances the oxidation process and a reproducible anodic and cathodic peak ascribed to Fe(CN)6 3-/Fe(CN)6 4redox couple at the surface of the electrode (0.17/0.30 V vs. SCE) was observed, proving that La species are available for the redox processes [51].…”

“…In the absence of Caf, two redox processes were identified: one recorded at -0.30 vs. SCE and another at 0.56 V vs. SCE. These values are related to the different metal species, the first one probably attributed to the La(0)/La(III) couple while the second one is attributed to Fe(II)/Fe(III) couple [24,41,51].…”

Effects of modified fly ash doped carbon paste electrodes and metal film electrodes on the determination of trace cadmium(ii) by anodic stripping voltammetry

“…32,33 Zeolite has been used in electroanalysis to measure toxic metal ions. [34][35][36] However, to the best of our knowledge, electrochemical determination of cadmium using the antimony lm modied zeolite modied by y ash doped carbon paste electrode has not been reported up to now. Thus, modication of y ash and application to the electrochemical detection of cadmium ions not only provide a supplementary method for the detection of cadmium ions but also provide new possibilities for the utilization of y ash.…”