Arsenic species in broiler (Gallus gallus domesticus) litter, soils, maize (Zea mays L.), and groundwater from litter-amended fields

► Broiler litter from different integrators contained divergent amounts and species of bioavailable arsenic. ► The organoarsenical roxarsone was largely transformed to arsenate in litter. ► Arsenate sorption in soils was strongly correlated to Fe and Al oxide contents. ► Soil sorption reduced the mobility and bioavailability of arsenate in groundwater and maize. ► The environmental fate of As depends on the As species in litter and chemical properties of soils.