Bioscience Methods 2017, Vol.8, No.1, 1-18
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Table 1 Concentration of heavy metals among the various locations with their background values by in soil receiving cassava mill effluents from small-scale cassava processors in a rural
community in the Niger Delta region of Nigeria
Locations&
background
values
Copper
Zinc
Manganese
Iron
Lead
Cadmium
Chromium
Nickel
Cobalt
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
BMM
6.06
3.87
43.45
40.31
39.19
39.69
3526.00
3309.04
5.27
1.89
0.11
0.23
2.12
1.59
2.66
1.38
10.31
0.039
BGM
5.94
4.07
32.47
35.47
32.47
35.82
3083.03
3384.44
4.84
2.22
0.11
0.30
1.62
1.84
2.85
1.77
8.13
0.051
Min
3.10
3.34
9.65
18.98
18.37
18.47
1405.77
2635.83
1.66
0.79
0.11
0.230
0.38
1.19
1.88
0.88
3.34
0.039
Max
10.41
4.84
49.75
49.65
55.29
53.87
5696.99
4171.09
10.63
8.21
0.11
0.479
3.90
4.50
4.21
4.87
11.28
0.083
LA
6.056
3.87
9.65
18.98
18.37
18.47
1405.79
3041.84
9.92
1.89
0.11
0.230
3.90
2.13
4.21
0.88
3.34
0.083
LB
8.83
4.83
38.09
49.65
20.91
53.87
1824.58
2635.83
10.63
8.21
0.11
0.479
0.38
1.18
1.88
2.94
10.31
0.039
LC
4.29
3.69
43.45
34.72
39.19
34.07
5696.99
4171.09
5.27
0.79
0.11
0.230
2.12
1.59
2.66
4.87
11.28
0.039
LD
10.41
3.34
45.41
40.33
43.03
43.83
5406.05
4012.61
2.88
1.89
0.11
0.230
1.54
1.19
4.20
1.38
10.86
0.039
LE
3.10
4.84
49.75
42.55
55.29
39.69
3525.99
3309.04
1.66
2.35
0.11
0.447
2.31
4.50
2.13
1.00
8.39
0.0711
Note: Izah et al. (2017d); BMM- Background Median Mean; BGM- Background Geometric Mean
