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]