2. Experimental
2.1. Apparatus
Voltammetric measurements were recorded using
the CV-50W Voltammetric Analyzer (USA) electrochemical
workstation running underWindowsTM software.
All control parameters are entered through a
BAS/Windows interface. This information is transferred
to the CV-50W microprocessor where optimum
hardware settings are calculated for the speci®ed
technique. These values are loaded automatically
and upon applying the command run, data are collected
and transmitted to the PC where it is displayed
in virtual real time. Standard C-2 cell stand is fully
shielded in a Faraday cage (EF-1080) with three
electrodes: a glassy carbon working electrode (MF-
2012, diameter 3 mm), a silver/silver chloride reference
electrode (MF-2063) and a platinum wire auxiliary
electrode (MW-1032). Voltammograms are
collected using a Hewlett Packard LaserJet 4L printer