Adsorption behavior of arsenic relating to different natural solids: Soils, stream sediments and peats

► Adsorption of arsenic on natural solids (soils, stream sediments, peats) ► Two sources of arsenic in the environment (atmospheric (AsV), and subsoil (AsIII)) ► As adsorption on natural solids represents balanced process running according to Langmuir model. ► High As-Fe correlation confirmed the dominant arsenic affinity to Fe particles. ► Fe-OM colloids play a significant role in As transport in the soil-surface water-groundwater system.