Performance of the AMEL 430 automated polarographic stand-static sessile mercury drop electrode apparatus at high negative potentials

Abstract

The performance of the AMEL 430 automated polarographic stand using static sessile mercury drop electrodes for various electrochemical techniques has been studied. N,N-Dimethylpyrrolidinium iodide [E_½=–2.7 V (SCE)] and p-methoxybenzaldehyde azine [E_½=–2.0 and –2.6 V (SCE)] were used as substrates with dimethylformamide as the solvent and tetrabutylammonium tetrafluoroborate (or iodide) as the electrolyte. The results obtained suggest that the AMEL 430 automated polarographic stand-static sessile mercury drop electrode device is particularly useful in situations where other commercial static hanging mercury drop electrodes fail to perform, for example, at high negative potentials or in the study of cathodic surface disrupting substrates.