Alex Lightfoot and her colleagues at Eawag, CSIRO, RIBES, and KIT used a miniRUEDI to study the interaction of groundwater with gases trapped in an aquifer in the Red River delta (Vietnam). They demonstrated how the gas controls the mobilisation and accumulation of arsenic in the groundwater, which is an important drinking water source.

Full paper: Alexandra K. Lightfoot, Matthias S. Brennwald, Henning Prommer, Emiliano Stopelli, Michael Berg, Martyna Glodowska, Magnus Schneider, Rolf Kipfer. Noble gas constraints on the fate of arsenic in groundwater. Water Research, doi: 10.1016/j.watres.2022.118199