2.4. Solutions
Silver was electrodeposited onto both ECPL and ECPA electrodes from an aqueous 2 x 10-3 M AgNO3 containing 1M KNO3 at pH 5.98. The support electrolyte was prepared with the latter reagent grade salt supplied by Merck and deionized water with 18.2 Mcm. To form AgCl, from the silver previously electrodeposited, an aqueous solution of KCl 0.1 M, pH= 6.85 was used.