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Levels, composition profiles and sources of polycyclic aromatic hydrocarbons (PAHs) were analyzed in 55 surface soil samples collected from Shanghai urban districts. The total concentrations of 22 PAHs (ΣPAHs) ranged from 442 to 19,700μgkg −1 , with a mean of 3780μgkg −1 , and the sum of 16 priority PAHs (Σ16PAHs) varied from 347 to 17,900μgkg −1 , with a mean of 3290μgkg ...
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