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Table 7 Distribution of Fe, Mn, Zn, Cu, Ni, Cr, Pb, and Cd (μg/L) in water samples during 2012–2015

From: Monitoring of the changes in potential environmental risk of some heavy metals in water and sediments of Burullus Lake, Egypt

H.M Date S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12
Fe (μg/l) 2010 415 202 255 419 95 222 252 212 215 224 430 218
2012 270 97 122 100 99 96 102 105 112 272 202 166
2015 214 112 154 219 100 122 152 112 115 124 230 118
Mn (μg/l) 2010 62 35 44 99 42 89 45 43 49 82 99 78
2012 55.6 13.5 42.3 71.5 40.2 35.2 42.2 39.9 39.8 40.2 66.6 52.2
2015 22 14 14 33 22 24 15 13 19 32 39 18
Zn (μg/l) 2010 512 196 95 544 186 195 84 166 162 178 552 158
2012 190.9 27.7 28.5 180.8 88.5 55.4 29.9 33.5 34.5 45.6 188.9 55.9
2015 212 69 56 244 86 56 54 68 64 78 246 58
Cu (μg/l) 2010 33 8 22 30 8 9 28 27 25 26 33 25
2012 70.6 7.2 10.5 77.8 22.2 7.5 7.7 33.3 34.5 45.6 188.9 55.9
2015 124 22 56 112 18 19 89 75 56 68 124 54
Ni (μg/l) 2010 9 4 6 10 2 2 1 3 1 2 5 2
2012 9.5 7.5 9.2 10.2 7.8 8.1 14.5 10.2 8.8 9.8 8.7 6.6
2015 9 3 5 10 1 1 2 4 1 2 8 3
Cr (μg/l) 2010 12 3 6 13 3 2 2 2 1 4 11 6
2012 7.2 5.2 5.5 7.4 3.3 4.6 3.5 5.8 4.3 4.3 8.6 4.2
2015 11 2 5 12 2 1 1 2 1 3 10 4
Pb (μg/l) 2010 35 65 12 55 35 45 45 68 44 46 48 42
2012 31.2 52.2 32.2 34.3 32.3 42.3 42.3 91.5 33.3 36.2 35.2 31.2
2015 30 75 22 56 30 35 40 78 74 36 43 32
Cd (μg/l) 2010 2.6 4.7 1.9 8.5 1.6 5.3 4.3 2.6 3.2 2.9 4.3 2.6
2012 2.1 7.7 1.5 6.6 1.6 3.5 4.2 2.1 3.3 3.2 3.9 0.3
2015 1.2 2.1 1.3 2.5 1.1 2.1 2.2 1.6 1.6 1.5 2.1 1.1