- Wasse r (1) (remove) - Influence of natural organic matter on
the mobility of arsenic in aquatic systems, soils and sediments
(2008) - The element As is today recognized as one of the most
dangerous inorganic contaminants and threats for the world’s
water resources. Arsenic is ubiquitious in the earth crust and
humans are especially affected through As polluted drinking
water supplies. The occurrence of high As groundwater
concentrations is often caused by geogenic processes of As
release from the solid phase and accumulation in the water
phase. Many contaminated aquifers are also characterized by high
concentrations of natural organic matter (NOM). Previous studies
showed that NOM presence may affect As mobility, but we are
lacking evidence about the reactions pathways and about the
importance As-DOM interactions in the environment. We therefore
focussed on studying reactions between NOM and As, including
redox reactions, complexation, colloid formation and sorption
competition in laboratory experiments. M