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 |
