TABLE 1.
Metal concentrations in sediment eluatesa
| Metal | Concn range | Mean | SD |
|---|---|---|---|
| Na | 4.1-21.4 | 10 | 4.6 |
| Ca | 0.1-0.7 | 0.4 | 0.2 |
| K | 0.2-0.9 | 0.4 | 0.2 |
| Mg | 0.46-2.4 | 1.2 | 0.5 |
| Al | 48.1-1,824.5 | 534.0 | 529.5 |
| As | 18.6-172 | 70.7 | 44.7 |
| Ba | 7.5-165.8 | 60.7 | 41.3 |
| Co | 2-22.8 | 7.7 | 5.2 |
| Cr | 7.8-60.5 | 28.6 | 12.0 |
| Cu | 0-276.9b | 48.3 | 68.3 |
| Fe | 681.5-4,199.9 | 1,827.6 | 910.5 |
| Li | 115.3-774.2 | 361.2 | 149.3 |
| Mn | 0-8,831.2b | 725.4 | 1,659.9 |
| Ni | 30.5-279.3 | 97.6 | 65.7 |
| Pb | 0-10b | 1.5 | 2.5 |
| Rb | 56.1-339.8 | 153.9 | 67.5 |
| Se | 24.6-121 | 67.7 | 26.4 |
| Sr | 2,722.1-11,440.7 | 6,066.6 | 2,377.7 |
| U | 2.6-122.5 | 26.5 | 25.7 |
| V | 6.5-67.7 | 23.5 | 15.1 |
| Zn | 20.1-384.6 | 83.0 | 77.6 |
a
Values for Na, Ca, K, and Mg are given in mg g−1 dry sediment, and those for the rest of the elements are given in ng g−1 dry sediment. Means are averages for 36 samples.
b
Minimum concentrations were less than or similar to background concentrations in ASW.