10th International Aerosol Conference
September 2 - September 7, 2018
America's Center Convention Complex
St. Louis, Missouri, USA

Abstract View


Investigation of Ground Level Aerosol (PM2.5) with Different Mode of Transports in Dhaka, Bangladesh

AHMAD MAJUMDER, M.D. Hossain, Abdullah Nayeem, Stamford University Bangladesh

     Abstract Number: 77
     Working Group: Aerosol Exposure

Abstract
Air pollution is considered as a threat to the environment of the modern cities. The study was carried out through the field experiments, collection and analysis of data from both primary and secondary sources to determine the concentration of particulate matter and causes of pollution.The study reviewed the suspended solid particulates specifically PM2.5 and compared between different categories roads which are Non-motorized, Mixed and Motorized and also with Environment Quality Standards (EQS) for Bangladesh published by the Department of Environment (DoE).This study outlinesalso make a co-relation between concentration of the particulate matters and increasing of motorization.PM2.5 was measured and conducted traffic volume survey in 12 sites across the city in Dhaka (August 2017). Levels in mixed and motorized areas were on average 182 and 272% higher, respectively, than non-motorized. Surprisingly, short term measurements (~8hrs) in predominantly mixed and motorized areas already exceeded the maximum recommended limit for 24hrs (65 µg/m3). This suggests a much higher pollution potential over a typical 24hrs period in motorized traffic areas. The study hypothesized that uncontrolled motorization is major cause of air pollution especially PM2.5 in the Dhaka city and the impact of these particulate matters on public health and environment are beyond the tolerable limits.The study has come up with some recommendations regarding improvement of air quality in respect of particulate matter and emphasized for further comprehensive study on other parameters of air pollution around Dhaka city.The study drew conclusion that the overall air quality regarding the particulate matter already exceeded highest standard limits of Bangladesh. The study recommended several measures to mitigate and prevent the harmful impacts and to improve the air quality of Dhaka city.

Key Words: Pollutant, Air pollution, Motorized, Non-motorized, Human health.