Table 7 The percentage share of carcinogenic PAHs in ∑14PAHs
Urban area | Suburban area | Rural area | |||||||
|---|---|---|---|---|---|---|---|---|---|
2014 | 2015 | 2016 | 2014 | 2015 | 2016 | 2014 | 2015 | 2016 | |
BaA | 6.5 | 6.7 | 6.5 | 3.5 | 3.6 | 3.6 | 1.6 | 1.9 | 1.7 |
BbF | 5.4 | 5.8 | 5.9 | 3.0 | 3.0 | 3.1 | 1.9 | 1.8 | 1.5 |
BkF | 2.8 | 2.9 | 2.9 | 2.1 | 2.4 | 2.4 | 1.1 | 1.3 | 1.2 |
BaP | 2.4 | 2.5 | 2.5 | 1.6 | 1.2 | 1.2 | 2.8 | 2.9 | 2.8 |
DahA | 1.2 | 1.2 | 1.3 | 1.6 | 1.6 | 1.7 | 4.9 | 4.6 | 4.9 |
Ind | 1.8 | 1.8 | 1.8 | 2.2 | 2.4 | 2.4 | 1.1 | 1.3 | 1.2 |
Σ 6PAHs | 20.1 | 20.9 | 20.9 | 14.0 | 14.2 | 14.4 | 13.4 | 13.8 | 13.3 |