Interpretation of Trace Metal Complexation by Aquatic Organic Matter

Critical Evaluation of Physicochemical Parameters and Processes for Modelling the Biological Uptake of Trace Metals in Environmental (Aquatic) Systems

“…Highly polyfunctional ligands, such as the HS, can have stability constants for a given metal that range over six or more orders of magnitude [105,131,152]. When such ligands are titrated by metal ions, the strongest sites are occupied first, while weaker and weaker sites are gradually filled until all sites are saturated [117,143].…”

Influence of ocean acidification on the complexation of iron and copper by organic ligands in estuarine waters

“…Estuarine systems also receive enhanced inputs of terrestrial organic matter, which has important metal binding capabilities (Buffle et al, 1984). In this study we (1) determined the complexing capacity of our estuarine sample for iron and copper over a pH range of 6.8 to 8.3 (on the NBS scale) by competitive ligand exchange-adsorptive cathodic stripping voltammetry (CLE-ACSV), (2) optimised a non-ideal thermodynamic model of organic matter complexation to fit our determined complexation parameters and (3) modelled the impact of changes in carbonate ion concentration and pH that might result from increased atmospheric pCO 2 on organic matter complexation of iron and copper.…”

Speciation in Freshwaters

“…210 Speciation in compartments of the environment Buffle et al (1984). Symbols correspond to those given in Buffle et al (1984) or in the following list: , Ramamoorthy and Kushner (1975); , Plavsic et al (1982); , Lee and Jonasson (1983); Tuschall and Brezonik (1983); , Fish and Morel (1985); , Nelson (1985); , Cabaniss and Shuman, (1986);, Florence (1986); Turner et al (1986); , Turner et al (1987); , Coale and Bruland (1988); , Hering and Morel (1988); , Holm and Curtiss (1990); , Lund et al (1990); , Midorikawa et al (1990); , Grimm et al (1991); , Scarano et al (1992); , Pettersson et al (1993).…”