Research Article
Impact Assessment of Phosphogypsum Leachate on Groundwater of Sfax-Agareb (Southeast of Tunisia): Using Geochemical and Isotopic Investigation
Table 1
Chemical composition of groundwater samples
| Months | Unit | Oct 13 | Jan 14 | Mar 14 | May 14 | Aug 14 | Oct 14 | Parameters | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max |
| | °C | 12.1 | 13.9 | 10.1 | 12.8 | 11 | 11.7 | 11.10 | 12.20 | 12.2 | 13.2 | 12.00 | 13.1 | pH | mg/L | 5.18 | 7.74 | 5.75 | 8.1 | 5.58 | 7.95 | 5.56 | 7.85 | 5.2 | 7.79 | 5.50 | 7.76 | O2dissolved | mg/L | 0.9 | 2.15 | 0.9 | 4.2 | 0.8 | 3.5 | 0.80 | 3.12 | 0.7 | 2.9 | 0.50 | 2.8 | EC | µs/cm | 2100 | 33200 | 1590 | 33000 | 1650 | 32600 | 1680 | 34300 | 1800 | 34700 | 1900 | 34900 | K+ | mg/L | 2.7 | 22.70 | 2.25 | 19 | 2.15 | 19.6 | 2.60 | 19.50 | 2.5 | 21.2 | 2.7 | 23.68 | Na+ | mg/L | 111.5 | 6965 | 139.4 | 6760 | 142 | 6300 | 115.16 | 6124 | 198 | 6600 | 195 | 6515 | Ca2+ | mg/L | 59 | 986 | 49 | 904 | 50 | 851 | 54.36 | 1075 | 51 | 1080 | 58 | 1020 | Mg2+ | mg/L | 37 | 945 | 22.5 | 920 | 24 | 940 | 29.75 | 1085 | 25 | 1050 | 35 | 1080 | Cl- | mg/L | 110.6 | 5480 | 104.3 | 5396 | 101 | 5372.5 | 151 | 5475 | 135.5 | 5810 | 112 | 5632.5 | | mg/L | 256.4 | 9143.9 | 195.2 | 9661.5 | 271 | 9533.9 | 199.20 | 8533.9 | 245 | 9313.9 | 255 | 9973 | | mg/L | 215 | 4396.1 | 201.5 | 4295.7 | 204 | 4352.9 | 261.25 | 4543.7 | 210 | 4857.3 | 210 | 4948.5 | Ortho-P | mg/L | 2.15 | 67.3 | 2.5 | 81.7 | 2.7 | 71.00 | 1.90 | 136.65 | 1.5 | 92 | 1.25 | 114.95 | | mg/L | 0.6 | 26 | 0.6 | 27 | 0.50 | 19.00 | 0.50 | 29.00 | 0.5 | 17 | 0.6 | 19 | Al | mg/L | 0.02 | 1.8 | 0.03 | 1.57 | 0.03 | 0.90 | 0.06 | 0.98 | 0.02 | 0.96 | 0.03 | 0.97 | Zn | mg/L | 0.03 | 1.46 | 0.02 | 1.41 | 0.02 | 1.44 | 0.03 | 1.47 | 0.04 | 1.51 | 0.03 | 1.05 |
|
|