Chemosphere 2021 Dec 3:133154. Epub 2021 Dec 3.
Institute of Physics Belgrade, National Institute of the Republic of Serbia, University of Belgrade, 118 Pregrevica Street, 11000, Belgrade, Serbia.
Among the polycyclic aromatic hydrocarbons (PAH), benzo[a]pyrene (B[a]P) has been considered more relevant than other species when estimating the potential exposure-related health effects and has been recognized as a marker of carcinogenic potency of air pollutant mixture. The current understanding of the factors which govern non-linear behavior of B[a]P and associated pollutants and environmental processes is insufficient and further research has to rely on the advanced analytical approach which averts the assumptions and avoids simplifications required by linear modeling methods. For the purpose of this study, we employed eXtreme Gradient Boosting (XGBoost), SHapley Additive exPlanations (SHAP) attribution method, and SHAP value fuzzy clustering to investigate the concentrations of inorganic gaseous pollutants, radon, PM and particle constituents including trace metals, ions, 16 US EPA priority PM-bound PAHs and 31 meteorological variables, as key factors which shape indoor and outdoor PM-bound B[a]P distribution in a university building located in the urban area of Belgrade (Serbia). Read More