Bioscience Methods 2017, Vol.8, No.1, 1-18
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Table 4 Contamination factor of heavy metals concentration in cassava mills effluent contaminated soil
Location
Seasons
BMM
BGM
Cu Zn Mn
Fe
Pb
Cd
Cr
Ni
Co
Cu
Zn
Mn
Fe
Pb
Cd
Cr
Ni
Co
LA
Dry
1.00 0.22 0.47
0.40
1.88
1.00
1.83
1.58
0.32
1.02
0.30
0.57
0.46
2.05
1.00
2.40
1.48
0.41
Wet
1.00 0.47 0.47
0.92
1.00
1.00
1.34
0.64
2.13
0.95
0.54
0.52
0.90
0.85
0.77
1.58
0.50
1.63
LB
Dry
1.46 0.88 0.53
0.52
2.02
1.00
0.18
0.71
1.00
1.49
1.17
0.64
0.59
2.20
1.00
0.23
0.66
1.27
Wet
1.25 1.23 1.36
0.80
4.34
2.09
0.74
2.13
1.00
1.19
1.40
1.50
0.78
3.70
1.60
0.64
1.66
0.76
LC
Dry
0.71 1.00 1.00
1.62
1.00
1.00
1.00
1.00
1.09
0.72
1.34
1.21
1.85
1.09
1.00
1.31
0.93
1.39
Wet
0.95 0.86 0.86
1.26
0.42
1.00
1.00
3.53
1.00
0.91
0.98
0.95
1.23
0.36
0.77
0.84
2.75
0.76
LD
Dry
1.72 1.05 1.10
1.53
0.55
1.00
0.73
1.57
1.05
1.75
1.40
1.33
1.75
0.60
1.00
0.95
1.47
1.34
Wet
0.86 1.00 1.10
1.21
1.00
1.00
0.75
1.00
1.00
0.82
1.14
1.22
1.19
0.85
0.77
0.65
0.78
0.76
LE
Dry
0.51 1.14 1.41
1.00
0.31
1.00
1.09
0.80
0.81
0.52
1.53
1.70
1.14
0.34
1.00
1.43
0.75
1.03
Wet
1.25 1.06 1.00
1.00
1.24
1.96
2.82
0.72
1.82
1.19
1.20
1.11
0.98
1.06
1.50
2.44
0.56
1.39
Note: CF < 1 (low contamination); 1 ≤ CF <3 (moderate contamination); 3 ≤ CF < 6 (considerable contamination); CF ≥ 6 (very high contamination)
