Table 5: Mean and total concentrations of carcinogenic and non-carcinogenic PAHs in water.
|
|
Sampou |
Gbarain |
Nembe |
|||||||||
|
PAHs (µg/l) |
Mean |
S.D. |
Total |
Percent (%) of ƩPAHs |
Mean |
S.D. |
Total |
Percent (%) of ƩPAHs |
Mean |
S.D. |
Total |
Percent (%) |
|
Non-carcinogenic PAHs |
1.57 |
2.10 |
10.99 |
18.44 |
0.27 |
0.36 |
1.90 |
6.36 |
0.80 |
1.80 |
5.53 |
17.15 |
|
Carcinogenic PAHs |
4.86 |
5.90 |
48.60 |
81.56 |
2.80 |
5.67 |
27.97 |
93.64 |
2.68 |
5.41 |
26.72 |
82.85 |
|
Total |
6.43 |
8 |
59.59 |
100 |
3.07 |
6.03 |
29.87 |
100 |
3.48 |
7.21 |
32.25 |
100 |
Carcinogenic PAHs: Fluoranthene, Pyrene, Benzo(a)anthracene, Chrysene, Benzo(b)fluoranthene, Benzo(k)fluoranthene, Benzo(a)pyrene, Dibenz(a,h) anthracene, Indeno(1,2,3NDcd)pyrene, Benzo(g,h,i)perylene.
Non-carcinogenic PAHs: Naphthalene, 2-methylnaphthalene, Acenaphthylene, Fluorene, Acenaphthene, Phenanthrene, Anthrace.