Anodic Determination of Acetylsalicylic Acid at a Mildly Oxidized
Boron-Doped Diamond Electrode in Sodium Sulphate Medium
Figure 7
(a) Chronoamperograms, at one potential level, +0.9 V versus SCE. (1) supporting electrolyte; (2) 0.2/50 dilution of Aspirin initial solution in supporting electrolyte; (3) 0.2/50 dilution of Aspirin initial solution in supporting electrolyte and ASA addition, 0.01 mM ASA final supplementary concentration; (4) 0.2/50 dilution of Aspirin initial solution in supporting electrolyte and ASA addition, 0.02 mM ASA final supplementary concentration; (5) 0.2/50 dilution of Aspirin initial solution in supporting electrolyte and ASA addition, 0.03 mM ASA final supplementary concentration; supporting electrolyte: 0.1 M Na2SO4 pH 7; currents read at 100 s. (b) Chronoamperograms, at one potential level, +0.9 V versus SCE. (1) 0.2/50 dilution of Acid Acetilsalicilic initial solution in supporting electrolyte; (2) 0.2/50 dilution of Acid Acetilsalicilic initial solution in supporting electrolyte and ASA addition, 0.02 mM ASA final supplementary concentration; (3) 0.2/50 dilution of Acid Acetilsalicilic initial solution in supporting electrolyte and ASA addition, 0.03 mM ASA final supplementary concentration; supporting electrolyte: 0.1 M Na2SO4 pH 7; currents read at 100 s.
