Figure 1
From: Pyrite surface interaction with selected organic aqueous species under anoxic conditions
Notional representation of pyrite surface sites and different kinds of interaction. (a) Outer-sphere complexation of non-specific nature; (b) inner-sphere complexation of a metal, specifically interacting with a sulfur surface site; (c) specific outer-sphere complexation, due to the specific interaction of the ligand. This arrangement is referred to as ternary surface complex; (d) hypothesized non-ionic surface sites.