Antimonate sorption in soils increases with ageing

• DOI: 10.1111/ejss.12845
• Publication Date: 2019-05-21T19:45:43Z
• Authors: Mieke Verbeeck; Yves Thiry; Erik Smolders
• Keywords: Antimonate; Aluminium hydroxide

Abstract It is unclear to what extent sorption of antimony (Sb) in soils occurs over long time scales. This study was set up monitor slow reactions (7 days 6 months) Sb Sb(V)‐spiked soil samples during aerobic incubation. The solid–liquid distribution coefficients ( K D ) increased by factors 3 between 7 and 190 after spiking, depending on the soil. increase value, hereafter named ageing factor, with increasing amorphous iron aluminium hydroxide concentration decreasing pH samples. Finally, were highest topsoils could be important preventing from migrating downwards into groundwater bodies. Highlights Quantification antimonate soils. Topsoils prevent downward leaching long‐term. Ageing pH. Slow reduce mobility