Abstract: Atmospheric concentrations of polycyclic aromatic hydrocarbons (PAHs) were measured during various seasons at six different cities/locations in Qingdao alongshore. The annual average PAHs concentration ranged from 16 ng/m³ (at a clean compared site) to 308 ng/m³ (in an industry site). The average total particulate PAHs concentration was 74.5 ng/m³ with a higher concentration of particulate PAHs in winter. Based on a year-round dataset, the sources of PAHs in the air of Qingdao were drawn by principal factor analysis and correlation analysis. The results indicated that vehicle emissions and oil burning were the main source of PAHs in Qingdao alongshore.

Key words: Polycyclic aromatic hydrocarbons (PAHs), Atmosphere aerosol, Factor analysis, Correlation analysis

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