| Summary: | Particulate and gaseous polycyclic aromatic hydrocarbon (PAHs) samples (<i>n</i> = 108) were measured every six days from January to December 2022 at a representative point in the Korean Banwol National Industrial Complex. The measurement results revealed that the concentration of particulate Σ18 PAHs was 7.92 ± 4.04 ng/Sm<sup>3</sup> in winter, 1.83 ± 1.99 ng/Sm<sup>3</sup> in spring, 1.43 ± 0.95 ng/Sm<sup>3</sup> in summer, and 2.58 ± 2.14 ng/Sm<sup>3</sup> in autumn. The concentration of gaseous Σ18 PAHs was 3.32 ± 3.72 ng/Sm<sup>3</sup> in winter, 6.34 ± 5.95 ng/Sm<sup>3</sup> in spring, 8.33 ± 8.13 ng/Sm<sup>3</sup> in summer, and 3.88 ± 1.71 ng/Sm<sup>3</sup> in autumn. The results of the correlation analysis showed that particulate PAHs have positive relationships with PM<sub>10</sub> and PM<sub>2.5</sub> and negative relationships with temperature and O<sub>3</sub>. The diagnostic ratio and PAHs component slope showed that the emission source characteristics of the Banwol National Industrial Complex were dominated by biomass coal combustion over four seasons; however, the influence of petroleum combustion (automobile emissions) was not negligible. As for coal combustion, bituminous coal was the most influential, and lignite was relevant in summer and autumn.
|
|---|