Table 3.
Content of uranium in the hot-water heater scale sample obtained from drinking water.
| Fraction | Total uranium content in the scale sample | U, ppm | % from Utotal* |
|---|---|---|---|
| 2.03 | 100 | ||
| Fraction I | Water-soluble and measurably adsorbed | < 0.01 | 0.0049 |
| Fraction II | Specifically adsorbed and bound to carbonates | 0.56 | 27.58 |
| Fraction III | Bound to manganese and iron oxides | 1.23 | 60.59 |
| Fraction IV | Bound to organic matter | < 0.01 | 0.0049 |
| Fraction V | Structurally bound to silicates | 0.24 | 11.82 |
*
Content, in %, individual fractions of total uranium content in the scale sample