Articles online

Source Apportionment of Fine and Coarse Particulate Matter in Industrial Areas of Kaduna, Northern Nigeria

Category: Urban Air Quality

Volume: 16 | Issue: 5 | Pages: 1179-1190
DOI: 10.4209/aaqr.2015.11.0636
PDF | RIS | BibTeX

Sunday A. Orogade1, Kayode O. Owoade2, Philip K. Hopke 3, Donatus B. Adie1, Abubakar Ismail1, Charles A. Okuofu1

  • 1 Department of Water Resources and Environmental Engineering, Ahmadu Bello University Zaria, (null), Nigeria
  • 2 Department of Physics, Obafemi Awolowo University, Ile-Ife, 220005, Nigeria
  • 3 Department of Chemical and Bimolecular Engineering and Center for Air Resources Engineering and Science, Clarkson University, Potsdam, NY 13699-5708, USA


Measured PM2.5 and PM2.5–10 at 2 sites in Kaduna, Northern Nigeria.
Average PM2.5 and PM2.5–10 concentrations were 135.7, 37.2 and 269.2, 97.4 µg m–3, respectively. 
PM2.5 sources were identified as: Residual oil, Soil, Continental dust, and Motor vehicles. 
PM2.5–10 sources were Soil, Continental dust, Vehicular emissions, and Petrochemical.


This study was conducted to investigate the sources of fine and coarse airborne particulate matter in an urban environment in Nigeria. A total of 278 samples were collected over a twelve-month period from two industrial areas (Kudenda agricultural processing AP and Refinery industries NNPC) in Kaduna, Northern Nigeria for PM2.5 and PM2.5–10 on nuclepore polycarbonate filters using a Gent sampler. Elemental concentrations and black carbon analyses were performed using X-Ray fluorescence (XRF) and optical transmissometry respectively. The annual average concentrations for PM2.5 at each site (Kudenda and NNPC) were 135.7 µg m–3 and 37.2 µg m–3 and for PM2.5–10, concentrations were 269.2 µg m–3 and 97.4 µg m–3, respectively. These values exceeded the Nigerian Annual National Ambient Air Quality Standard (NAAQS) of 15 µg m–3 for PM2.5 and 60 µg m–3 for PM10. Positive matrix factorization (PMF) was used to identify sources and quantify their contribution to pollutants at the sampling sites in one of the most industrialized cities in Nigeria. Four sources were resolved for both PM2.5 and PM2.5–10 and were identified as: Residual oil 49% (17.16 ± 0.04 µg m–3), Soil 29% (10.36 ± 0.26 µg m–3), Continental dust 18% (6.20 ± 0.18 µg m–3), and Motor vehicles emissions 4% (1.56 ± 0.02 µg m–3) for PM2.5 while that for PM2.5–10 were Soil 50% (27.37 ± 1.03 µg m–3), Continental dust 21% (11.55 ± 0.26 µg m–3), Vehicular emissions 18% (9.87 ± 0.03 µg m–3), and Petrochemical 11% (6.23 ± 0.02 µg m–3). About 82% and 79% were attributed to anthropogenic sources for both fine and coarse samples, respectively. Continental dust was associated with northwesterly and northerly regional transport. Residual oil combustion was the predominant fine PM source and was attributed to fuel oil combustion for power generation and process energy within the local industrial areas. Although transported continental dust is an important source, the majority of the airborne PM in this industrial area was the result of local emissions.


PM2.5 PM2.5–10 XRF Black carbon Source apportionment Nigeria

Related Article

Chemical Characterization and Source Identification of Particulate Matter at an Urban Site of Navi Mumbai, India

P. Kothai, I.V. Saradhi, G.G. Pandit , A. Markwitz, V.D. Puranik
Volume: 11 | Issue: 5 | Pages: 560-569
DOI: 10.4209/aaqr.2011.02.0017

On the Morphology and Composition of Particulate Matter in an Urban Environment

Bahadar Bahadar Zeb, Khan Khan Alam , Armin Armin Sorooshian, Thomas Blaschke, Ifthikhar Ahmad, Imran Shahid
Accepted Manuscripts
DOI: 10.4209/aaqr.2017.09.0340

Concentration of Ultrafine Particles near Roadways in An Urban Area in Chicago, Illinois

Sheng Xiang, Zhice Hu, Wenjuan Zhai, Dongqi Wen, Kenneth E. Noll
Accepted Manuscripts
DOI: 10.4209/aaqr.2017.09.0347

Spatial Characterization of Black Carbon Mass Concentration in the Atmosphere of a Southeast Asian Megacity: An Air Quality Case Study for Metro Manila, Philippines

Honey Dawn Alas , Thomas Müller, Wolfram Birmili, Simonas Kecorius, Maria Obiminda Cambaliza, James Bernard B. Simpas, Mylene Cayetano, Kay Weinhold, Edgar Vallar, Maria Cecilia Galvez, Alfred Wiedensohler