Abstract:
This study aimed to investigate the contamination characteristics of polycyclic aromatic hydrocarbons (PAHs) in soils from various areas of a coking plant and evaluate the associated health risks to the population. The contamination characteristics of soils in the production and non-production areas of the coking plant were compared and analyzed. Using the eigenvalue ratio method and the principal component analysis method, the sources of contamination in different areas were investigated and their health risks to the population were evaluated. The results indicated that PAHs concentrations in the coking plant soils were below the standard for Class II construction land. PAHs levels in the soil of the production area were higher than those in the non-production area, with both areas predominantly containing medium and low molecular weight PAHs. Soil pollution in the production area primarily originated from coal combustion, while in the non-production area, pollution came from coal combustion, transportation, and liquefied petroleum combustion sources. Health risk evaluations showed that both carcinogenic and non-carcinogenic risks were within acceptable levels.