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. Author manuscript; available in PMC: 2013 Jul 22.
Published in final edited form as: Environ Pollut. 2010 Mar 2;158(5):1245–1251. doi: 10.1016/j.envpol.2010.01.021

Fig. 5.

Fig. 5

The PAH profiles for background, rural and urban locations (2: 2-ring PAH; 3: 3-ring PAH; 4: 4-ring PAH; 5: 5-ring PAH; 6: 6-ring PAH).