Record Display for the EPA National Library Catalog


Main Title Airborne Mercury Deposition and Watershed Characteristics in Relation to Mercury Concentrations in Water, Sediments, Plankton, and Fish of Eighty Northern Minnesota Lakes.
Author Sorensen, J. A. ; Glass, G. E. ; Schmidt, K. W. ; Huber, J. K. ; Rapp, G. R. ;
CORP Author Environmental Research Lab.-Duluth, MN. ;Minnesota Univ., Duluth. Coll. of Science and Engineering.
Publisher c1990
Year Published 1990
Report Number EPA/600/J-90/317;
Stock Number PB91-146712
Additional Subjects Watersheds ; Mercury(Metal) ; Water pollution sampling ; Biological effects ; Air water interactions ; Deposition ; Air pollution ; Sediments ; Plankton ; Fishes ; Wildlife ; Pollution sources ; Aquatic ecosystems ; Minnesota ; Lakes ; Precipitation(Meteorology) ; Environmental transport ; Atmospheric diffusion ; Reprints ; Northeast Region(Minnesota)
Library Call Number Additional Info Location Last
NTIS  PB91-146712 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 14p
In light of increasing fish consumption advisories in several states, a comprehensive multimedia database was created to answer a variety of questions. Mercury concentrations in precipitation, lake water and sediment, zooplankton, and fish were measured and analyzed together with extensive watershed and lake chemistry data for 80 lake watersheds in the study region of northeastern Minnesota including the Superior National Forest, Voyageurs National Park, and Boundary Waters Canoe Area Wilderness. Atmospheric deposition of mercury, transport, water column lifetimes, and sedimentation in lakes are determined. The factors relating mercury concentrations within the lake watershed components are analyzed and discussed. The notable correlates with mercury residue levels in northern pike of a standard length and weight (55 cm, 1.0 kg) were mercury concentrations in zooplankton and water, total organic carbon concentration, and pH. The primary source of mercury was found to be of atmospheric origin. (Copyright (c) 1990 American Chemical Society.)