AAAR 37th Annual Conference October 14 - October 18, 2019 Oregon Convention Center Portland, Oregon, USA
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Sources and Health Risks of Ambient Polycyclic Aromatic Hydrocarbons in India
Fenglin Han, Hao Guo, Jianlin Hu, Sri Kota, Jie Zhang, Qi Ying, HONGLIANG ZHANG, Louisiana State University
Abstract Number: 40 Working Group: Health-Related Aerosols
Abstract Polycyclic aromatic hydrocarbons (PAHs) in the environment are of significant concern due to their high toxicity that may result in adverse health effects. PAHs measurements at the limited air quality monitoring stations alone are insufficient to gain a complete concept of ambient PAH levels. This study simulates the concentrations of PAHs in India and identifies the major emission sources. Annual anthropogenic emissions of CO, NOx, SO2, non-methane volatile organic compounds (NMVOC), PM2.5, PM10, EC and OC with a spatial resolution of 0.1° × 0.1° were downloaded from Emissions Database for Global Atmospheric Research (EDGAR) version 4.3. Representative profiles for each EDGAR source category were taken from the SPECIATE 4.3 database. Biogenic emissions were generated using the Model for Emissions of Gases and Aerosols from Nature (MEGAN) v2.1. Open biomass burning emissions were generated from the Fire Inventory from NCAR (FINN). PAH emissions of 16 priority PAH species directly associated with health risks were generated from the global high-resolution PKU-FUEL-2007 inventory. The estimated emissions were then applied to simulate ambient concentrations of PAHs in India for January, April, July and October 2015 using the Community Multiscale Air Quality (CMAQ) model (v5.0.1). The spatial and temporal variations were analyzed and contributions of both local and regional major sources were quantified. Incremental lifetime cancer risk (ILCR) of exposure to NAPH and carcinogenic PAHs were also quantified to estimate the excess cancer cases in India. Source apportionment of ILCR was analyzed to represent contributions of different sectors. This study provides important information for the prevention and treatment of PAHs in India.