Ali, Muhammad Ubaid 1;Liu, Guijian 1;Yousaf, Balal 1;Abbas, Qumber 2;Ullah, Habib 2;Munir, Mehr Ahmed Mujtaba 2;Fu, Biao 2 1 CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, 230026, China, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, 710075, China firstname.lastname@example.org;email@example.com;firstname.lastname@example.org 2 CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, 230026, China email@example.com;firstname.lastname@example.org;email@example.com;firstname.lastname@example.org;
This study aims to investigate the pollution characteristics of road dust and their associated health risks of potentially toxic elements (PTEs) to humans using array-based risk assessment models described by United States Environmental Protection Agency (USEPA) in a metropolitan area of Hefei, China. Geoaccumulation index (Igeo) was used to describe pollution characteristics of roadside dust in urban, periurban and industrial areas. Results indicate that industrial roadside dust was contaminated with Fe, Ni, Cu, Ti, V, Pb, Ba, Sb, Cr, Sn, Pb, As and Ga showing Igeo value (log2 (x)) between Igeo class 3 to 4. In other hand, urban roadside dust contamination with Cu, Zn, Sb and Ga ranged between Igeo classes 2 to 3 and with As and Pb ranged between Igeo classes 4 to 5. Furthermore, health risk assessment revealed negligible non-cancerous health hazard in all sites including urban, periurban and industrial areas. The hazard quotient (HQ) and hazard Index (HI) values for all exposure routes (ingestion, inhalation, and dermal contact) were <1 except for chromium with HI value of 1.06E+00 in industrial areas. Moreover, the most prominent exposure route was ingestion (HQing) and the non-carcinogenic health risks were found to be high in case of children compared to the adults. The cancer risk from As, Co, Cr, Ni, and Pb was found to be in safe levels as the RI (carcinogenic risks) values were below the limits for carcinogens (1.00E-6 to 1.00E-4).
Health risks (major);Air pollution;Dust;Environmental Protection Agency;Gallium;Hazards;Health;Health hazards;Lead;Nickel;Pollution;Risk assessment;Roads and streets;Roadsides;Transportation;Urban growth;