| Abstrakt: |
The measurement of the copper complexing capacity of natural waters by anodic stripping voltammeting (ASV) has been shown to be dependent on the plating potential used to measure the concentration of electroactive copper in solution. Results are presented for the complexing capacities and conditional stability constants of 3 Papua New Guinean lake waters at pH 6.0 measured at the plating potentials -0.3, -0.6, -0.9 and -1.2v versus SCE. The results are rationalised using both a single ligand model and a two ligand model. |
