Study on Indoor Airborne Polycyclic Aromatic Hydrocarbons( PAHs) Concentrations in Different Countries or Regions and the Influencing Factors

Polycyclic aromatic hydrocarbons ( PAHs) are ubiquitous contaminants in indoor environments, mainly existed in the form of airborne phase ( gas phase + particle phase). People can be exposed to airborne PAHs through inhalation and dermal sorption, which may lead to adverse health effects. Due to the majority of human life spent in indoor environments, indoor airborne PAHs concentration is crucial to human exposure and its health risk. In this study, we summarized the measured results of indoor PAHs airborne concentrations in different countries and
regions from published papers, reflecting the indoor PAHs level and predicting the current status of indoors PAHs in China. In addition, we also analysed the differences of indoor airborne PAHs concentration between studies and their influencing factors, including pollution sources, seasonal variations and building ventilation, in order to guide the selection of controlling strategies for indoor airborne PAHs.