Multi-competitive interaction of As(III) and As(V) oxyanions with Ca2+, Mg2+, PO3−4, and CO2−3 ions on goethite

The CD model, calibrated on single ion systems, is able to predict the dominant role of phosphate on the As(III) and As(V) oxyanion concentrations in As-PO3−4-CO2−3-Ca2+-Mg2+ goethite systems.