The graph showing the separation of AsIII and AsV using the ImpAs resin and electrochemical detection using in house potentiostat with Au electrode. The background solutions used include water with a HEPES buffer, challange water – the test waters used in industry to evaluate the performance of sorbents, and synthetic groundwater reflecting the groundwater composition in Bangladesh.
We find a very good separation which suggests that this resin can be used for arsenic speciation in waters.