TABLE 3.
Distribution of Fe(II) and Fe(III) in the water columns and substrates of springs
| Source of water and site | Concn (μM) of:
|
|
|---|---|---|
| Fe(II) | Fe(III) | |
| Water column | ||
| AS101 | 15.604 | 41.494 |
| AS102 | 0 | 78.353 |
| AS103 | 29.502 | 33.065 |
| RM | 37.569 | 78.246 |
| Substratea | ||
| AS101-70 | 0 | 50.353 |
| AS102-70 | 0 | 20.680 |
| AS103 Fe | 116.1 | 903.9 |
| AS103 Fe-Sb | 33.335 | 30.741 |
| AS103Sc | 3.884 | 46.851 |
| RM | 21.404 | 452.686 |
Values are based on 100-mg samples.
Fe-S, iron deposited on sulfur.
AS103 temperature was 75°C for all samples.