Determination of manganese in some surface soil.
| Serial no. | Manganesea (mg kg−1) (n = 5) | RSD (%) | Sample sourceb |
|---|---|---|---|
| S1b | 3.5 ± 0.5 | 1.8 | Agriculture soil (Chittagong University Campus) |
| S2 | 1.05 ± 0.3 | 1.5 | Marine soil (Bay of Bengal) |
| S3 | 21.5 ± 1.0 | 1.8 | Traffic soil (Kadamtali Bus Terminal) |
| S4 | 95.6 ± 1.5 | 2.2 | Industrial soil (T. S. P. Complex, Chittagong) |
| S5 | 78.5 ± 1.0 | 2.3 | Industrial soil (Eastern refinery, Chittagong, Bangladesh) |
| S6 | 130.5 ± 1.3 | 2.5 | Industrial soil (Eastern Cables) |
| S7 | 145.0 ± 1.0 | 2.0 | Industrial soil (P·H·P glass) |
| S8 | 7.85 ± 0.8 | 2.1 | Road side soil (Dhaka-Chittagong Highway) |
| S9 | 117.0 ± 1.5 | 2.0 | Paint soil (Berger paint, Chittagong) |
| S10 | 7.5 ± 0.8 | 1.8 | River soil (River Karnaphuly, Chittagong) |
a
Average of five analyses of each sample.
b
Composition of the soil samples: C, N, P, K, Na, Ca, Mg, Cu, Mo, Fe, Pb, V, Zn, Mn, Co, NO3, SO4etc.