Determination of chlorite ion in dilute solution by pulse polarography

Masschelein, W.J.; Denis, M. G.; Ledent, R.

doi:10.1016/s0003-2670(01)93231-3

Cited by 12 publications

(3 citation statements)

References 6 publications

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“…The qualitative détermination of the peroxides in solution was done by means of the following reactions: (i) formation of the orangeyellow complex between hydrogen peroxide (H2O2) and titanium (IV) sulphate. Ozone, sulphuric, persulphuric and Caro's acid do not interfer [7,8]. (ii) Oxidation in neutral solution (sodium acétate) of benzidine (4,4'-diaminobiphenyl) by the persulphuric acid (H2S2O8) with formation of a blue compound [9,10].…”

Section: Potsvomentioning

confidence: 99%

Galvanostatic anodization of titanium—II. Reactions efficiencies and electrochemical behaviour model

Delplancke

Winand

1988

Electrochimica Acta

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The efficiencies of the différent anodic reactions observed during the galvanostatic anodization of commercially pure titanium in 1 M sulphuric acid between 25 and 75°C have been studied. The two previously observed electrochemical behaviours are characterized by différent kinetics for the anodic film growth, the titanium dissolution, the peroxides formation and the oxygen évolution. Finally, a theoretical interprétation of the obtained data is proposed.

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Section: Potsvomentioning

confidence: 99%

Galvanostatic anodization of titanium—II. Reactions efficiencies and electrochemical behaviour model

Delplancke

Winand

1988

Electrochimica Acta

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“…Diffusion coefficients have been measured using rotating disk electrochemistry, but complications were encountered when platinum electrodes were used . Several electrochemical studies of ClO 2 - have been focused on analytical detection limits. ,− …”

Section: Introductionmentioning

confidence: 99%

Slow Heterogeneous Charge Transfer Kinetics for the ClO₂^-/ClO₂Redox Couple at Platinum, Gold, and Carbon Electrodes. Evidence for Nonadiabatic Electron Transfer

et al. 1999

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Chlorite (ClO2 -) is one of the few simple aqueous anions that forms a stable product on one-electron oxidation. The heterogeneous charge transfer rate constants at E° = 0.700 V vs SCE for the ClO2 -/ClO2 redox couple have been measured at Au, Pt, and glassy carbon electrodes in aqueous KNO3 solutions using rotating disk and ac voltammetry techniques between 10 and 30 °C. At 25 °C in 1.0 M KNO3 and pH = 7, the standard heterogeneous rate constants k el were measured as 0.015 ± 0.001 cm/s and 0.014 ± 0.003 cm/s, respectively, at Au and reduced Pt electrodes. The transfer coefficient α on gold was measured to be 0.50 ± 0.01 using ac voltammetry. The heterogeneous rate constants obtained with the use of a glassy carbon electrode were slower (0.0079 ± 0.001 cm/s at 25 °C). The measured activation free energy for electron transfer at a gold electrode was 25 ± 3.3 kJ/mol with a preexponential factor of 310(+900/−230) cm/s. Heterogeneous rate constants of experiments performed in D2O solvent were only slightly slower than those measured in H2O, indicating that the redox couple does not exhibit differential hydrogen bonding. Digital simulation of cyclic voltammograms, with k el determined from the ac voltammetry and rotating disk techniques, gave good agreement with experiment. Marcus theory was applied to understand the unexpected slow heterogeneous kinetics for this simple redox couple. Additionally, the preexponential factor in the semiclassical expression describing heterogeneous electron transfer was examined. The slow electron transfer process is primarily attributed to a small preexponential factor that may arise from a high degree of nonadiabaticity in the electron transfer process.

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“…However, these methods cannot be used to determine CAC and FAC separately. Separation methods such as capillary electrophoresis 29 or ion chromatography, 4,[30][31][32] and differential pulse polarography 33,34 were reported for the determination of chlorite. However, none of the separation methods achieved the speciation of FAC and CAC.…”

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confidence: 99%

Sequential Flow Injection Determination of Chlorine Species Using a Triiodide-selective Electrode Detector

et al. 2006

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Determination of chlorite ion in dilute solution by pulse polarography

Cited by 12 publications

References 6 publications

Galvanostatic anodization of titanium—II. Reactions efficiencies and electrochemical behaviour model

Galvanostatic anodization of titanium—II. Reactions efficiencies and electrochemical behaviour model

Slow Heterogeneous Charge Transfer Kinetics for the ClO₂^-/ClO₂Redox Couple at Platinum, Gold, and Carbon Electrodes. Evidence for Nonadiabatic Electron Transfer

Sequential Flow Injection Determination of Chlorine Species Using a Triiodide-selective Electrode Detector

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Determination of chlorite ion in dilute solution by pulse polarography

Cited by 12 publications

References 6 publications

Galvanostatic anodization of titanium—II. Reactions efficiencies and electrochemical behaviour model

Galvanostatic anodization of titanium—II. Reactions efficiencies and electrochemical behaviour model

Slow Heterogeneous Charge Transfer Kinetics for the ClO2-/ClO2Redox Couple at Platinum, Gold, and Carbon Electrodes. Evidence for Nonadiabatic Electron Transfer

Sequential Flow Injection Determination of Chlorine Species Using a Triiodide-selective Electrode Detector

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Slow Heterogeneous Charge Transfer Kinetics for the ClO₂^-/ClO₂Redox Couple at Platinum, Gold, and Carbon Electrodes. Evidence for Nonadiabatic Electron Transfer