The PAH concentrations of these soils and their generated dust aerosol were measured, showing that the enrichment factors (EFs) of PAHs were affected by soil texture, PAH contamination level, molecular weight of PAH species and aerosol sizes. In this study, dust aerosols were generated in the laboratory using soils (sandy loam and loam) with various physicochemical properties. ![]() However, it remains unclear how these pollutants are transferred through the air/soil interface. It is known that they are released to the atmosphere by wind via dust aerosol generation. Polycyclic aromatic hydrocarbons (PAHs) are major organic pollutants in soil. This study contributes to the understanding of PAHs sources in dust and soil samples in children's playground and helps policymaker determine the right contamination sources for risk management. The fugacity comparison of phenanthrene and pyrene in dust, soil, air, and playground surface material indicated that atmospheric deposition is the main source of PAHs in the dust and soil on rubber-surfaced and uncovered surfaced playgrounds. The higher total organic carbon content can explain the higher PAH accumulation and lower fugacities of PAHs. The diagnostic ratios and principal component analysis suggested that a mixed coal combustion and vehicular emission was likely the main source of PAHs in the surface dust and soil. ![]() ![]() 4- to 6-ring PAHs were dominant, accounting for approximately 53.8%–94.5% of the total PAHs in surface dust and soil. The total 16 EPA PAHs concentrations in surface dust and soil varied from 198 to 919 μg kg⁻¹ dw and 68–169 μg kg⁻¹ dw, respectively. Surface dust and soil samples were collected from 15 different playgrounds in Seoul, Republic of Korea. This study investigated the profiles and sources of PAHs from poured rubber-surfaced playground dust and uncovered playground surface soil, by applying an ex-situ equilibrium passive sampling technique. Cancer risk can be associated with exposure to polycyclic aromatic hydrocarbons (PAHs) in playground dust and soil.
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