Surface-Water-Quality Assessment of the Upper Illinois River Basin in Illinois,Indiana, and Wisconsin. Spatial Distribution of Geochemicals in the Fine Fraction of Streambed Sediments, 1987

摘要

The purpose of this report is to present maps of the spatial distribution andplots of exceedance probability for aluminum, antimony, arsenic, barium, beryllium, boron, cadmium, calcium, carbon (total, inorganic, and organic), cerium, chromium, cobalt, copper, gallium, iron, lanthanum, lead, lithium, magnesium, manganese, mercury, molybdenum, neodymium, nickel, miobium, phosphoruis, potassium, scandium, selenium, silver, sodium, strontium, sulfur, thorium, titanium, uranium, vanadium, yttrium, and zinc in the fine (silt and clay) fraction of streambed sediument in the UIRB. The spatial distribution maps highlight streambed sediument with very low or very high element concentrations relative to the rest of the streambed sediment in the UIRB. The exceedance probability plots show differences in the distribution of concentrations in high-and low-order streams.