城市道路灰尘 铂族累积特征及影响机制.pdf

Science of the Total Environment 505 (2015) 712–723 Contents lists available at ScienceDirect Science of the Total Environment journal homepage: /locate/scitotenv Ecological and human health hazards of heavy metals and polycyclic aromatic hydrocarbons (PAHs) in road dust of Isfahan metropolis, Iran Naghmeh Soltani a,⁎, Behnam Keshavarzi a, Farid Moore a, Tahereh Tavakol a, Ahmad Reza Lahijanzadeh b, Nemat Jaafarzadeh c,d, Maryam Kermani e a Department of Earth Sciences, College of Science, Shiraz University, Shiraz 71454, Iran b Khuzestan Environmental Protection Offi ce, Khuzestan, Iran c Environmental Technology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran d School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran e Isfahan Environmental Protection Offi ce, Isfahan, Iran H I G H L I G H T S • This study assesses a comprehensive environmental risk of trace metals and PAHs pollution in road dust. • As, Cd, Cu, Pb and Zn contamination were found to be significantly elevated in Isfahan road dust. • Traffic is the major contributing source of road dust pollution. • Exposure to PAHs in road dust poses high cancer risk for Isfahan residents. a r t i c l e i n f o a b s t r a c t Article history: This study investigates trace elements and PAHs content in road dust of Isfahan metropolis, central Iran. The Received 29 June 2014 mean concentrations of As, Cd, Cu, Ni, Pb, Sb and Zn are 22.15, 2.14, 182.26, 66.63, 393.33, 6.95 and Received in revised form 27 September 2014 707.19 mg kg−1, re