Research Article
Preliminary Study on Physico-Chemical Parameters and Phytoplankton of Chiffa River (Blida, Algeria)
Table 1
Monthly variations of mean values of physico-chemical parameters in Chiffa river.
| Parameters | April | May | June | July | August | Algerian guidelines | WHO Standards |
| (°C) | 15.0 | 20.7 | 19.3 | 22.7 | 22.7 | 30 | 25–30 | pH | 7.6 | 7.6 | 7.6 | 7.5 | 7.6 | 6.5–8.5 | 6.5–8.5 | EC (mScm−1) | 1.00 | 0.90 | 1.03 | 0.87 | 1.06 | 2800 | 180–1000 | (mgL−1) | 3.00 | 0.67 | 7.00 | 0.00 | 0.00 | 50 | 50 | (mgL−1) | 0.28 | 0.00 | 0.00 | 0.00 | 0.00 | 0.1 | ≤0.1 | (mgL−1) | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.5 | ≤0.1 | (mgL−1) | 0.06 | 0.94 | 0.14 | 0.01 | 0.00 | 0.5 | 0.2 | Na+ (mgL−1) | 47.00 | 19.33 | 41.33 | 43.67 | 44.33 | 100 | 150 | Cl− (mgL−1) |
46.67 | 35.67 | 52.00 | 48.00 | 47.33 | 250 | 250 | Ca2+ (mgL−1) | 101.67 | 83.33 | 104.67 | 90.33 | 92.00 | 75 | 200 | Mg2+ (mgL−1) | 34.67 | 37.67 | 31.00 | 27.33 | 30.33 | 50 | 50 | Org. m. (mgL−1) | 3.93 | 1.13 | 0.40 | 1.43 | 1.23 | | <5 | Chl.a (µgL−1) | 0.70 | 1.87 | 9.95 | 132.3 | 85.56 | | | (mgL−1) | 242.7 | 248.7 | 224.7 | 219.7 | 219.3 | 200 | |
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Temp: temperature; EC: electrical conductivity; : nitrate; : nitrite; : Ammoniac; : Phosphate; Na+: Sodium; Cl−: Chloride; Ca2+: Calcium; Mg2+: Magnesium; Org m.: organic matter; Chl.a: Chlorophyll a; : Bicarbonate.
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