Table 6 Characteristics of lake sediments
From: Aqueous chemistry of anthropogenically contaminated Bengaluru lakes
Lake sediment | Gravimetric water content (%) | Organic matter (%) | TDS (from EC test; mg L−1) | Ion composition of water leachate (mg L−1) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Ca2+ | Mg2+ | Na+ | K+ | HCO3− | SO42− | Cl− | ||||
Puttenahalli | 366 | 10.4 | 286 | 47.9 | 33.0 | 4.2 | 2.4 | 73.2 | 52.5 | 4.3 |
Ulsoor | 722 | 16.2 | 301 | 46.3 | 30.1 | 2.8 | 1.9 | 87.5 | 34.3 | 0 |
Nagawara | 235 | 5.8 | 165 | 4.1 | 37.2 | 7.2 | 5.4 | 11.2 | 29.1 | 0 |
|  |  |  |  | Exchangeable cations (ammonium acetate extract; meq 100 g−1) |  |  |  | |||
Ca2+ | Mg2+ | Na+ | K+ | |||||||
Puttenahalli | 18.8 | 36 | 0.52 | 0.25 | Â | |||||
Ulsoor | 76.2 | 51.2 | 0.7 | 0.38 | Â | |||||
Nagawara | 5.1 | 100.3 | 0.46 | 0.66 | Â | |||||