Table 3 Concentrations of minor or trace elements in clay soil samples
Element | Ado Ekiti | Ara-Ijero Ekiti | Ire Ekiti | Isan Ekiti | Orin Ekiti |
|---|---|---|---|---|---|
Range | Range | Range | Range | Range | |
(Mean ± SD) | (Mean ± SD) | (Mean ± SD) | (Mean ± SD) | (Mean ± SD) | |
Cu (ppm) | 32-165 | 28-190 | 22-176 | 18-195 | 17-174 |
(100.6 ± 61.6) | (107.6 ± 63.1) | (91.6 ± 60.8) | 143.2 ± 71.9 | (82.6 ± 60.9) | |
Zn (ppm) | 90-246 | 88-290 | 74-364 | 95-311 | 67-246 |
(161.0 ± 71.9) | (184.2 ± 76.0) | (202.4 ± 124.3) | 257.2 ± 92.5 | (166.4 ± 84.7) | |
Mn (ppm) | 219-2823 | 605-2539 | 452-3606 | 780-5296 | 710-2000 |
(1593.0 ± 1190.4) | (1869.4 ± 785.2) | (1682.8 ± 1306.7) | 3780.6 ± 1870.7 | (1451.4 ± 596.8) | |
Zr (ppm) | 151-953 | 166-813 | 46-270 | 222-486 | 105-1439 |
(443.2 ± 314.5) | (389.0 ± 252.4) | 150.2 ± 95.0 | 332.4 ± 95.7 | (439.0 ± 56.4) | |
Ni (ppm) | 88-194 | 32-269 | 33-336 | 27-216 | 22-273 |
(136.8 ± 43.5) | (151.8 ± 95.0) | 180.4 ± 128.0 | 133.2 ± 69.5 | (147.2 ± 93.5) | |
Se (ppm) | 23-68 | 49-97 | 44-61 | 43-98 | 42-101 |
(49.0 ± 18.9) | (65.5 ± 21.0) | 54.8 ± 8.1 | 69.5 ± 23.3 | (63.3 ± 25.9) | |
Rb (ppm) | 33-104 | 171-234 | 30-234 | 169-282 | 21-188 |
(63.0 ± 31.6) | (202.8 ± 30.4) | 107.0 ± 90.4 | 225.5 ± 50.2 | (117.0 ± 74.2) | |
Sr (ppm) | 13-89 | 91-118 | 10-90 | 121-346 | 23-256 |
(57.8 ± 31.9) | (106.8 ± 12.0) | 36.6 ± 31.7 | 225.0 ± 80.4 | (91.0 ± 38.8) | |
Nb (ppm) | 35-120 | 34-94 | 28-99 | 54-114 | 24-79 |
(78.3 ± 41.5) | (76.3 ± 28.2) | 63.8 ± 29.1 | 90.5 ± 28.0 | (51.8 ± 26.8) | |
Pb (ppm) | 73-499 | 75-310 | 72-311 | 86-317 | 70-232 |
(232.2 ± 164.5) | (199.8 ± 100.9) | 174.4 ± 118.0 | 247.2 | (150.6 ± 76.6) | |
As (ppm) | 137-183 | ND | ND | ND-49 | ND |
(160.0 ± 32.5) | 23.0 ± 22.7 |