Table 3.
Compilation of representative conditional stability constants and concentrations of potential metal-binding ligands
| Location | Additional measurements | Methoda | Reference |
|---|---|---|---|
| Iron | |||
| Central California coastal upwelling system | log KFeL,Fe′ = 11.5–11.9 | CSV, SA; performed on partially isolated ligand(s) | Macrellis et al. 2001 |
| Cobalt | |||
| Northeast Atlantic Ocean | log K′Co-Vit. B12 = 16.4 log K′Co-coenz. B12 = 15.5 |
CSV, nioxime | Ellwood & van den Berg 2001 |
| Sargasso Sea | log KCoHDMG2 = 11.5 ± 0.3 at pH 8 | CSV, DMG | Saito & Moffett 2001b |
| Coastal waters | concentration of Vit. B12 = 47–446 pM | C18 solid phase extraction and quantification by reverse-phase HPLC with UV-Vis detector | Okbamichael & Sanudo-Wilhelmy 2004 |
| Zinc | |||
| Northeastern Atlantic Ocean | free Zn ion conc. = 6–20 pM | CSV, pyrrolidinedithiocarbamate | Ellwood & van den Berg 2000 |
| Copper | |||
| Subarctic northwest Pacific | log K′Cudeep = 13.8–14.1 | CSV, SA, and benzoylacetone | Moffett & Dupont 2007 |
| Estuarine waters | log K′CuThiol = 12.3–14.1 | CSV, SA | Laglera & van den Berg 2003 |
a
Abbreviations: CSV, cathodic stripping voltammetry; SA, salicylaldoxime; DMG, dimethylglyoxime; HPLC, high-performance liquid chromatography.