Research Article
Polycyclic Aromatic Hydrocarbons Bound to PM 2.5 in Urban Coimbatore, India with Emphasis on Source Apportionment
Table 5
Site-specific diagnostic ratio of PAHs and their probable sources.
| Sampling stations | BaP/ BaP+ Chr | BbF/ BkF | BaP/ BghiP | Ind/ BghiP | Ind/ (Ind+ BghiP) | BaA/ (Chr+ BaA) | BghiP/ BaP |
| SIDCO | 0.52 | 2.98 | 0.24 | 0.20 | 0.26 | 0.53 | 2.99 | Lakshmi mills | 0.09 | 3.85 | 0.58 | 1.15 | 0.48 | 0.13 | 2.11 | Kuniyamuthur | 0.07 | 5.49 | 0.74 | 1.12 | 0.44 | 0.34 | 2.81 | Kaundampalayam | 0.05 | 1.67 | 1.60 | 1.99 | 0.66 | 0.24 | 1.16 | 100 feet road | 0.18 | 0.89 | 0.53 | 0.73 | 0.36 | 0.12 | 2.01 |
| Diesel vehicles | >0.73 [25, 26] | >0.5 [27] | | ~1.0 [28] | 0.35–0.70 [29] | 0.38–0.64 [30] | 1.2–2.2 [31] | Industrial furnaces | | | | | 0.36–0.57 [32] | 0.23–0.89 [32] | 0.02–0.06 [32] | Catalyst-equipped cars | | | | | 0.21–0.22 [30] | 0.22–0.55 [33] | 2.5–3.3 [31] |
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