The binding of trace amounts of lead(II), copper(II), cadmium(II), zinc(II) and calcium(II) to soil organic matter

Reactions Controlling Heavy Metal Solubility in Soils

“…where A-is the dissociated organic ligand (Marinsky et al, 1980). This interpretation contrasts with the common assumption that bonding of metals to organic matter is a chelation or complexation reaction with more than one functional group.…”

Copper Sorption on a Straw Lignin: Experiments and EPR Characterization

“…KNO 3 , HNO 3 , and KOH were obtained in the purest commercially available grade (puriss) and used without further purification. The metal ion stock solutions were prepared from copper(II) nitrate puriss reagent (Fluka).…”

“…Different transition and heavy metals can have very different free bonding energies to soil organics (3,4). Recent spectroscopic studies have indicated that this wide range in bonding energies can be explained by the type of bonding between the metal and the functional groups.…”

Speciation in Freshwaters

“…Examples of this approach would be the study of metal complexation by the carboxylate and phenolate groups of fulvic compounds (Marinsky et al, 1980;1982) or by the ϵM-OH groups of Si, Fe and Al oxyhydroxides (Hohl and Stumm, 1976;Davis and Leckie, 1978;Dzombak and Morel, 1990) synthesised under well-controlled laboratory conditions (so minimising chemical impurities and physical heterogeneities).…”