10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
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Comparison of PAHs Levels and Health Risks in China, India and the United States
FENGLIN HAN, Jie Zhang, Qi Ying, Jianlin Hu, Sri Kota, Hongliang Zhang, Louisiana State University
Abstract Number: 73 Working Group: Health Related Aerosols
Abstract Polycyclic aromatic hydrocarbons (PAHs) in the environment are of significant concern due to their high toxicity and adverse health effects. This study compares the concentrations of PAHs levels and health risks in three major countries, China, India and the United State (U.S.). Gridded anthropogenic emissions for China and India are generated from Emission Database for Global Atmospheric Research (EDGAR) version 4.3, and PAH emissions are from the global high-resolution PKU-FUEL-2007 inventory. U.S. emissions are generated using the Sparse Matrix Operator Kernel Emission (SMOKE) model version 3.7 and national emission inventory (NEI) 2011. Open biomass burning emissions are from the Fire Inventory from NCAR (FINN). A modified version of the Community Multiscale Air Quality (CMAQ) model (v5.0.1) was used to simulate the emissions, reactions, transport, deposition of 16 priority PAHs for obtaining the concentrations of PAHs species in gas and particulate phases. The PAHs concentrations of January, April, July and October in 2011, 2013 and 2015 were studied in the U.S, China and India, respectively. The source apportionment of PAHs is conducted using the brute-force and variations of source contributions are analyzed. The health risks, specifically excess cancer risk, of PAHs due to inhalation exposure of outdoor naphthalene (NAPH) and seven larger carcinogenic PAHs (cPAHs) are then estimated and compared in the three countries.