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Table 7. Trace-element concentrations in whole-body brook trout samples, Yellowstone River Basin, 1998
[mm, millimeter; g, gram. Element concentrations in micrograms per gram dry weight]
Site number Number of fish in sample Mean total length (mm) Mean weight (g) Percent of fish with anomalies Aluminum Antimony Arsenic Barium Beryllium
9 8 180 67 0 57.0 <.2 <.2 3.6 <.2
12 6 177 77 0 147 <.2 0.3 3.7 <.2
Site number Boron Cadium Chromium Cobalt Copper Iron Lead Manganese Mercury
9 0.3 <.2 1.6 0.5 5.3 138 <.2 5.8 0.01
12 0.6 <.2 2.3 0.4 4.0 437 <.2 12.5 0.04
Site number Molybdenum Nickel Selenium Silver Strontium Uranium Vanadium Zinc Water (percent)
9 <.2 0.4 2.8 <.2 52.0 <.2 0.3 66.2 74.1
12 <.2 0.5 2.9 <.2 39.1 <.2 1.5 60.7 73.2

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