Table 6.
Concentrations (ng/Kg WM) of polycyclic aromatic hydrocarbons in Ostrea edulis in different seasons. The results are expressed as means (n = 3) ± SD. Results from ANOVA show significant differences between the means. In each row, the means that are not statistically different are indicated with the same letter (A, B, C) as a superscript (Tukey’s test, p < 0.05).
| PAH (ng/g WM) | December | June | October |
|---|---|---|---|
| Naphthalene | <0.01 A | 1.22 ± 0.47 B | 0.28 ± 0.11 A |
| Acenaphthene | <0.01 B | 0.03 ± 0.01 A | 0.04 ± 0.00 A |
| Fluorene | 0.23 ± 0.04 A | 0.36 ± 0.04 A | 0.23 ± 0.06 A |
| Phenanthrene | 0.11 ± 0.07 A | 1.11 ± 0.08 B | 1.80 ± 0.19 C |
| Anthracene | <0.2 A | <0.2 A | <0.2 A |
| Fluoranthene | 0.64 ± 0.11 A | 1.32 ± 0.04 AB | 2.09 ± 0.76 B |
| Pyrene | 0.70 ± 0.10 B | 1.37 ± 0.07 A | 1.26 ± 0.09 A |
| Benzo(a)anthracene | 0.03 ± 0.01 A | 0.01 ± 0.00 A | 0.03 ± 0.01 A |
| Chrysene | 0.11 ± 0.01 B | 0.14 ± 0.01 B | 0.91 ± 0.09 A |
| Benzo(b)fluoranthene | 0.06 ± 0.05 A | 0.45 ± 0.03 B | 0.70 ± 0.08 C |
| Benzo(k)fluoranthene | <0.14 A | <0.14 A | 0.27 ± 0.03 B |
| Benzo(a)pyrene | <0.14 B | <0.14 A | <0.14 A |
| Dibenzo(a,h)anthracene | 0.10 ± 0.01 A | 0.04 ± 0.02 B | 0.05 ± 0.00 AB |
| Benzo(g,h,i)perylene ene |
0.05 ± 0.01 A | 0.09 ± 0.00 B | 0.07 ± 0.01 AB |
| Indeno(1,2,3-cd)pyrene | <0.04 A | 0.07 ± 0.02 B | 0.19 ± 0.00 C |
| ∑PAHs | 2.33 ± 0.30 A | 5.06 ± 1.77 AB | 7.55 ± 1.39 B |