The details of the experimental procedures for ASV and pseudovoltammetry work have been previously described by our group.[45,46] Total Zn and Cu concentrations were performed using the method of Bruland et al. CSV-CLE and kinetic Fe(III) measurements with 1N2N were performed as we have outlined previously. [10-12] CSV-CLE experiments with SAL were performed as described by Rue and Bruland.[6,7] Examples of model ligands commonly used in experiments are given in Appendices 1 and 2. Appendix 2 shows types of strong ligands (functional groups are circled) that bind to Fe(III) and which may bind to other metals.