Chemical Characterization and Seasonality of Ambient Particles (PM 2.5) in the City Centre of Addis Ababa

Details

• Personal Author:
  Berhane K ; Gilliland F ; Kumie A ; Lai A ; Patz J ; Samet J ; Schauer JJ ; Sricharoenvech P ; Tefera W
• Description:
  Ambient air pollution is a growing public health concern in major African cities, including Addis Ababa (Ethiopia), where little information is available on fine particulate matter (PM2.5, with aerodynamic diameter <2.5 um) pollution. This paper aims to characterize annual PM2.5, including bulk composition and seasonal patterns, in Addis Ababa. We collected 24-h PM2.5 samples in the central city every 6 days from November 2015 to November 2016. The mean (+/- SD) daily PM2.5 concentration was 53.8 (+/- 25.0) ug/m3, with 90% of sampled days exceeding the World Health Organization's guidelines. Principal components were organic matter (OM, 44.5%), elemental carbon (EC, 25.4%), soil dust (13.5%), and SNA (sulfate, nitrate, and ammonium ions, 8.2%). Higher PM2.5 concentrations were observed during the heavy rain season, while crustal dust concentrations ranged from 2.9 to 37.6%, with higher levels during dry months. Meteorological variables, vehicle emissions, biomass fuels, unpaved roads, and construction activity contribute to poor air quality. Compared to the Air Quality Index (AQI), 31% and 36% of observed days were unhealthy for everyone and unhealthy for sensitive groups, respectively. We recommend adopting effective prevention strategies and pursuing research on vehicle emissions, biomass burning, and dust control to curb air pollution in the city. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Air Pollution Dust Occupational Health Particulate Matter Safety
• Keywords:
  Airborne Particulates Air Pollution Air Pollution Sampling Author Keywords: Fine Particulate Matter Carbon Dust Elemental Carbon Organic Carbon Organic Dusts Organic Matter Particulate Dust Seasonal Factors

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• ISSN:
  1660-4601
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  California ; Colorado ; New York ; OSHA Region 2 ; OSHA Region 5 ; OSHA Region 8 ; OSHA Region 9 ; Wisconsin
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  17
• Issue:
  19
• NIOSHTIC Number:
  nn:20061412
• Citation:
  Int J Environ Res Public Health 2020 Oct; 17(19):6998
• Contact Point Address:
  Worku Tefera, School of Public Health, College of Health Sciences, Addis Ababa University, Addis Ababa 9086, Ethiopia
• Email:
  workutefera2000@yahoo.com
• CAS Registry Number:
  Carbon (CAS RN 7440-44-0)
• Federal Fiscal Year:
  2021
• Performing Organization:
  Addis Ababa University, Ethiopia
• Peer Reviewed:
  True
• Start Date:
  20120922
• Source Full Name:
  International Journal of Environmental Research and Public Health
• End Date:
  20150831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:9b706da15cfd8bca8aa025d4a35de616562c2209e94dab6fa6301ba01029875d31233d42ff39ea8fcf7340f1708951c4c4fb9ae274b1046e96eb84819e771d06
• Download URL:
  https://stacks.cdc.gov/view/cdc/224948/cdc_224948_DS1.pdf
• File Type:
  [PDF - 1.08 MB ]