The emission factors of 21 PAHs in the exhausts of gasoline engines (ng/L-fuel) were categorized and the emission factors of PM 2.5 and total particle-bounded PAH concentrations (ΣPAHs) were quantified as shown in Table 4. The PAHs emitted were mostly LMW-PAHs with the total of 0254, followed by some MMW-PAHs with 0.0661 and HMW-PAHs with 0.0574. ...
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