Spatial Analysis of Ammonia from Vehicle Measurement in Seoul

Ammonia (NH3) emissions contribute significantly to the formation of fine particulate matter (PM2.5) in the atmosphere and nitrogen deposition in ecosystems. In addirion, NH3 plays a central role in the impact of air pollution on human health and the environment, and efforts to better understand and control NH3 emissions are essential. In order to understand the spatial NH3 concentrations in Seoul, vehicle measurement were conducted in the springtime and wintertime in 2020. As a result, overall concentration of NH3 show about 50 ppb in Seoul, Republic of Korea. Gangbyeonbukro (110.12 ppb) has the highest level of ammonia due to car emissions in this study. In addition, ammonia concentration in Spring presented about twice higher than wintertime due to ambient temperature and number of vehicles. This study can apply on the control strategies contributing substantially to the compilation of NH3 emission and prediction of future motor vehicle emissions in Seoul.