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Table 2
Chemical composition of bottom sediments in the analyzed reservoirs in September 2012.
| Reservoir | CH | KA | PN |
|---|---|---|---|
| Bottom sediments parameters (%) | |||
| CO2 | 3.95 | 3.78 | 2.2 |
| SiO2 | 51.68 | 59.45 | 69.06 |
| N | 0.78 | 0.54 | 0.72 |
| CaO | 3.56 | 3.92 | 3.1 |
| MgO | 2.74 | 2.46 | 0.34 |
| Fe2O3 | 4.99 | 4.37 | 3.98 |
| Al2O3 | 3.42 | 2.99 | 7.41 |
| Organic matter | 16.69 | 14.09 | 14.62 |
| Fractions of phosphorous in bottom sediments (mg P d.m−1) | |||
| NH4Cl-P (labile) | 0.016 | 0.013 | 0.021 |
| BD-P (bound Fe) | 0.188 | 0.251 | 0.378 |
| NaOH-RP (bound Al) | 0.684 | 0.440 | 1.55 |
| NaOH-NRP (bound organic matter) | 0.99 | 1.039 | 0.857 |
| HCl-P (bound Ca) | 0.484 | 0.530 | 0.522 |
| Res-P | 0.612 | 0.610 | 0.637 |
| TP | 2.87 | 3.23 | 3.97 |
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