Air pollution emission inventory in Hanoi City, Vietnam

Abstract

Abstract Hanoi is an economic-society centre of Vietnam but also faces the problem of air pollution with diverse sources including points, areas, and mobility sources. The emission inventory is a big project at the city level which determines a tabulation of compounds released into the atmosphere. The objectives of the study are to determine the status of air pollutant emissions and which activities are the main contributors to emissions in the sources in Hanoi city. By the combined methods, findings revealed that air pollution emitted from the sources in Hanoi included 10,570 tons SO2 per year, 65,963 tons NOx, 1,815,670 tons CO, 32,640 tons PM2.5 and 42,492 tons PM10 per year, respectively. Determined transport is an important source with accounted for over 90 per cent of the total NOx and CO emissions, and 66 per cent of the total PM. With SO2, point sources accounted for 57 per cent of total emissions in Hanoi. This research showed priority sources to manage and contribute the data for following the effort to reduce emissions.