Mercury in aquatic systems in Antarctica

We have measured Hg concentrations in one of the most remote aquatic system s in the world, Taylor Valley (similar to 78 degrees S), Antarctica. These measurements, along with the previous work of Vandal er al. [1998], provide baseline concentrations of Hg, as well as an assessment of Hg speciation, in a remote aquatic environment. Dissolved Hg concentrations in the surface waters of these lakes and glacial streams range from 0.10 to 0.44 ngL(-1). These values are similar to those reported from other remote locations and suggest these values represent current baseline values globally.