Table 2 Descriptive statistics of the measured heavy metals (μg/l) in comparison with drinking and irrigation standards
From: Temporal and spatial evaluation of the River Nile water quality between Qena and Sohag Cities, Egypt
Parameter | Season | Min | Max | Mean | Q1 | Q2 | Q3 | MAL1 | Pass1% | MAL2 | Pass2% |
|---|---|---|---|---|---|---|---|---|---|---|---|
Pb | W | 163 | 202 | 183 ± 9.4 | 175 | 182 | 189 | 10 | 0 | 5000 | 100 |
S | 193 | 402 | 287.9 ± 57.3 | 239 | 289.5 | 332 | 0 | 100 | |||
Cr | W | 1.7 | 62.9 | 23.1 ± 13.8 | 15.3 | 19.6 | 30.6 | 50 | 93.3 | 100 | 100 |
S | 63 | 467 | 288.2 ± 97 | 224.8 | 307.0 | 349 | 0 | 3.3 | |||
Cu | W | bdl | 110 | 31.7 ± 34.1 | 0 | 25.0 | 50 | 2000 | 100 | 200 | 100 |
S | bdl | 170 | 40.7 ± 54.6 | 0 | 0 | 70 | 100 | 100 | |||
Cd | W | bdl | 4 | 2.0 ± 1.1 | 1.3 | 2.0 | 3 | 3 | 93.3 | 10 | 100 |
S | 1 | 5 | 3.1 ± 1.0 | 2.3 | 3.0 | 4 | 70 | 100 | |||
As | W | bdl | 3086 | 322.6 ± 698.3 | 0 | 0 | 228 | 10 | 63.3 | 100 | 70 |
S | bdl | 2380 | 375.4 ± 653.6 | 0 | 0 | 356 | 63.3 | 66.7 | |||
Zn | W | 50 | 280 | 136.3 ± 48.4 | 102.5 | 130.0 | 160 | 3000 | 100 | 2000 | 100 |
S | 60 | 700 | 218 ± 149.5 | 140 | 170.0 | 220 | 100 | 100 |