Gehirnver�nderungen bei Schwangerschaftstoxikose

Wilke, Günther; Klees, E; Moschel, Renate

doi:10.1007/bf00217827

Cited by 15 publications

(1 citation statement)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The diffusion coefficient calculated from the Levich analysis for a four-electron reduction was where M is the molecular weight in g mol-' and D the diffusion coefficient in cm2 s-'. The diffusion coefficient was also similar to the value calculated with the Wilke-Chang equation [36] of 5.00 x cm2 s-'. The first reduction wave was attributed to a process in which preprotonation of the azo bond was required prior to reduction (CE process).…”

Section: The Voltammetry Of Orange Gsupporting

confidence: 84%

The mechanism of the electro‐reduction of some azo dyes

et al. 1996

View full text Add to dashboard Cite

The pH dependence of the reduction mechanism of the azo dyes Orange G and Sunset Yellow FCF was investigated using a mercury plated rotating disk electrode, The reduction was shown to proceed via a CE mechanism except at very high pH, where direct reduction was observed. It is proposed that the chemical step of the CE reaction, namely protonation of the azo bond, could occur either intramolecularly, via azo/hydrazone tautomerism, or intermolecularly from bulk solution. At low pH the protonation from free H + predominated while above neutral pH, until deprotonation of the ortho hydroxyl group involved in the tautomerism, the intramolecular mechanism was more prevalent. The kinetic parameters for the chemical steps in each of the two protonation mechanisms were determined.

show abstract

Section: The Voltammetry Of Orange Gsupporting

confidence: 84%