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It was aimed to compare the uptake of PAHs (Polycyclic aromatic hydrocarbon) by  Cucurbita pepo  fruits exposed to exhaust gas or not in a greenhouse chamber.  Cucurbita pepo  vegetable was grown in two greenhouses, which were formed as control group and experimental group. The experimental group greenhouse was regularly exposed to exhaust gas for a certain period, no intervention was made to the control group. PAHs were measured in grown  Cucurbita pepo  samples and indoor air of greenhouse by passive air sampler (PAS). The average ∑ 16 PAH concentration in  Cucurbita pepo  in the experimental group (exposed to exhaust gas) was 191.5 ng/g, compared with 124.8 ng/g in the control group (not exposed). The nearness of the vegetable to exhaust gas source were effective on the PAH levels. A significantly positive relationship (p &lt; 0.05) was observed in PAH concentration between Cucurbita pepo and indoor air. It was found that PAH levels measured in the  Cucurbita pepo  vegetable were increased in proportion to PAH exposure, but this amount tended to decrease in the  Cucurbita pepo  growing sufficiently. Benzo(a)pyrene had the highest toxic equivalence value in health risk assessment calculations. A negative effect of excess foliation on plant growth rather than fruit production was observed under exhaust gas exposure.

Investigation of Polycyclic Aromatic Hydrocarbons (PAHs) Uptake by Cucurbita pepo under Exhaust Gas Loading