Studies on cobalt speciation in groundwaters

The use of Sephadex G-10 gel chromatography with a groundwater mobile-phase to separate bound and free cobalt in concentrated groundwater samples has proven to be a relatively non-invasive technique for the investigation of groundwater chemistry. Trace amounts of cobalt as would be expected to be released from a radioactive waste repository do exhibit association with groundwater species from a test site near the Drigg low-level nuclear waste site in Cumbria. [Continues.]