| Abstract: | It is shown that the data of Kremling (1983) for iron concentrations in sulphidic basin water fit to a solubility curve assuming reasonable constants for FeS in equilibrium with Fe2+, Fe(HS)2 and FeHS2−. Explanations are offered for the fact that the iron and manganese concentrations are considerably lower in the Framvaren bottom water with high sulphide concentrations (6–8 mM) than in the Gotland Deep with lower sulphide concentrations (0.001–0.052 mM). For other trace metals (Co, Ni, Cu, Zn, Cd, Hg and Pb) equilibrium conditions do not seem to exist. |
