||Wisconsin Univ.-Madison. ;Wisconsin Power and Light Co., Madison. ;Madison Gas and Electric Co., WI. ;Wisconsin Public Service Corp., Madison. ;Wisconsin Public Service Commission, Madison. ;Wisconsin Dept. of Natural Resources, Madison.;Environmental Research Lab.-Duluth, MN.
In a lake system where atmospheric input greatly exceeds other source inputs, the atmospheric supply, water column transport, and sediment accumulation should be coupled. This research examined the exchange of lead between these compartments. The approach was to use Pb-210 as a natural tracer to provide experimental evidence concerning the movement of lead between various compartments, thereby linking the geochemical regime of lead in an integrated lake system. The investigation was conducted in Crystal Lake, Wisconsin, an oligotrophic, non-calcareous, seepage lake located in a semi-remote, heavily forested area of north-central Wisconsin. The atmosphere serves as the principal route for transport of material to the lake. Stable Pb concentrations in the water column are of the order of 200 ng/kg.