Table 2.
The concentration of PAHs before and during lockdown
| PAHs | Abbreviation | No. of rings | Before lockdown | During lockdown | ||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | |||
| Naphthalene | Nap | 2 | 6.47 | 2.18 | 1.03 | 0.43 |
| Acenaphthylene | Acy | 3 | 4.09 | 1.91 | 1.3 | 0.79 |
| Acenaphthene | Ace | 3 | 5.86 | 1.7 | 1.34 | 0.42 |
| Fluorene | Flu | 3 | 5.32 | 2.51 | 1.2 | 0.76 |
| Phenanthrene | Phe | 3 | 9.23 | 2.27 | 1.15 | 0.15 |
| Anthracene | Ant | 3 | 9.12 | 2.44 | 1.07 | 0.42 |
| Fluoranthene | Flua | 4 | 8.81 | 1.78 | 1.73 | 0.96 |
| Pyrene | Pyr | 4 | 6.92 | 1.05 | 1.39 | 0.45 |
| Chrysene | Chr | 4 | 8.18 | 2.26 | 1.82 | 1.49 |
| Benzo[a]anthracene | BaA | 4 | 6.16 | 1.98 | 1.79 | 1.6 |
| Benzo[b]fluoranthene | BbF | 5 | 7.82 | 2.76 | 1.89 | 1.42 |
| Benzo[k]fluoranthene | BkF | 5 | 8.56 | 2.97 | 1.46 | 0.79 |
| Benzo[a]pyrene | BaP | 5 | 5.93 | 0.7 | 0.86 | 0.51 |
| Dibenzo[ah]anthracene | DBahA | 5 | 5.46 | 0.65 | 1.83 | 1.29 |
| Benzo[ghi]perylene | B(ghi)P | 6 | 4.95 | 1.43 | 1.53 | 0.76 |
| Indeno[123-cd]pyrene | IcP | 6 | 5.83 | 1.57 | 1.8 | 1.2 |
| ∑PAH | 108.71 | 27.77 | 23.19 | 11.21 | ||