Exploring Spatial Clustering of Industrial Air Pollutants and Its Implications in Jos City, Plateau State, Nigeria

Nuhu H. Tini¹, Sunday Mperiju²

¹Department of Urban and Regional Planning, Faculty of Environmental Sciences, Adamawa State University Mubi, Nigeria

²Department of Geography, Faculty of Environmental Sciences, Adamawa State University Mubi, Nigeria

Abstract

This study investigates the clustering of industrial air pollutants in Jos Metropolis, focusing on identifying key pollutants, mapping their spatial distribution, and assessing the associated implications. The research employed a mixed-method approach, integrating geospatial analysis, environmental monitoring, and socio-demographic surveys to evaluate air quality and its associated implications. Primary data were collected from 30 strategically selected sampling points across industrial, residential, and commercial zones of the Metropolis. Air quality measurements were conducted using a handheld gas analyzer (Aeroqual Series 500) to monitor concentrations of Total Suspended Particulate (TSP), particulate matter (PM2.5 and PM10), volatile organic compounds (VOCs), carbon monoxide (CO), nitrogen oxides (NOx), sulfur dioxide (SO₂), and heavy metals (Pb, Cd, Hg). Secondary data, including satellite imagery (Landsat 8 OLI/TIRS) for spatial analysis, demographic statistics, and Geographic Information Systems (GIS), were used to map industrial clusters and pollution hotspots, while the Nearest Neighbor Analysis (NNA) quantified spatial distribution patterns. Findings reveal that air pollution in Jos Metropolis is concentrated in industrial and mining zones, with TSP values ranging from 231–600 µm, indicating poor air quality in areas like Rayfield and Dilimi. PM2.5 and PM10 levels exceeded WHO and FMEnv standards, posing significant health risks such as respiratory and cardiovascular illnesses, environmental, social, tourism, and economic challenges. Industrial activities, including mining, metal fabrication, and agro-processing, are major contributors to elevated pollutant levels in the city. In contrast, areas with minimal industrial activity, such as Hill Station Hotel, recorded TSP values of 0–75 µm, reflecting better air quality. It is recommended that agencies such as NESREA should strengthen regulatory enforcement to limit industrial emissions. Other recommendations included the adoption of cleaner production technologies, effective urban planning interventions, and sustained public education.

Keywords

air pollutants; clustering; air quality; implication; Jos city.

References

1. Abler, R., Adams, J.S. and Gould, P. (1972). Spatial Organizations. The Geographers View of the World. London. Ed 3. pp 25-28.
2. Angwe, C.A. and Gabche, C.E.: (1997): ‘Quantitative Estimation of Land-based Sources of Pollution to the Coastal and Marine Environment of the Republic of Cameroon. Research Center for Fisheries and Oceanography, Limbe, Cameroon, Vol. 33, pp.21
3. Aquilas, N.A., Ngangnchi, F. H., & Mbella, M. E. (2024). Industrialization and Environmental Sustainability in Africa: The Moderating Effects of Renewable and Non-Renewable Energy Consumption. Heliyon Volume10 Issue 4 (2024) e25681. Pp 1 – 15.
4. Bacos, B., Veres, C., Curta, P. A. et al. (2024). Impacts of Air Pollution on Community Well-Being in the Tourism Sector: A Comprehensive Literature Review. Sustainability, 16(23), 2024, 10752;https://doi.org/10.3390/su162310752.
5. Ezeh, G.C., Obioh, I.B., Asubiojo, O.I., Onwudiegwu, C.A., Nuviadenu, C.K. and Ayinla, S.B. (2018) Airborne Fine Particulate Matter (PM2.5) at Industrial, High- and Low-Density Residential Sites in a Nigerian Megacity. Toxicological & Environmental Chemistry, 100, 326-333.
6. Gherghina, Ș. C., Botezatu, M. A., Hosszu, A. (2020). Small and Medium Enterprises (SMEs). The Engine of Economic Growth through Investments and Innovation. Sustainability, Volume 10 Issue 1.https://doi.org/10.3390/su12010347.
7. Imeokparia, P. O. and Ediagbonya, K. (2014). Small and Medium Scale Enterprises (SMEs): A Catalyst in Promoting Economic Development in Nigeria. Journal of Education and Practice, Vol.5, No.33, 2014.www.iiste.org ISSN 2222-1735 (Paper) ISSN 2222-288X (Online).  
8. Lall, S., Redding, S. J., Venables, A. J., Deichmaann, U. (2008). Industrial Location in Developing Countries. The World Bank Research Observer 23(2):219-246, DOI: 10.1093/wbro/lkn007.
9. Matovu A. (2010). Impact of Wastewater Discharge and Pollution on Water Quality and Biota in Kiyanja Stream, Kawempe Division, Kampala. MSc Thesis, Makerere University.
10. Miller, K., Neubauer, A., Varma, A., Williams, E. (2011). First Assessment of the Environmental Compliance Assistance Programme for SMEs (ECAP) Final Report, London (2011).
11. NGS, (2025). Industrialization, Labor and Life. National Geographic Society. https://education.nationalgeographic.org.
12. Pona, H. T., Daun, X., Ayantobo, O. O. et al. (2021). Environmental health situation in Nigeria: Current Status and Future Needs. Helilon Volume 7 Issue 3, 2021.
13. Qing, Z. (2012). The Research on Influence of Industrial Cluster on Regional Economic Development. 2012 International Conference on Mechanical and Electronic Engineering. IERI Procedia 3 ( 2012 ) 206 – 212
14. Smith, D. M. (1981). Industrial Cluster: A Geographic Analysis. Second Edition; John Wiley & sons, New York.
15. Tariq, M., Ali, M. and Shah, Z. (2006): Characteristics of Industrial Effluents and their Possible Impacts on Quality of Underground Water; Soil Science Society of Pakistan Department of Soil & Environmental Sciences, NWFP Agricultural University, Peshawar.
16. Uba, M. M. (2015). Cluster Analysis of Filling Stations in Kano Metropolis, Nigeria. Zaria, Nigeria: Department of Geography, Faculty of Science; Ahmadu Bello University.
17. Wang, S., Song, R., Xu, Z. et al (2024). The Costs, Health and Economic Impact of Air Pollution Control Strategies: A Systematic Review. Global Health Research and Policy Volume 9, Article Number: 30 (2024).
18. Weber, A. (1929). Theory of the Cluster of Industries. University of Chicago Press.
19. Weeks, J. (1975). Policies for Expanding Employment in the Informal Urban Sector of Developing Economies. International Labour Review.
20. Yelwa, N. A., & Adamu, A. K. (2014). Assessment of Air Quality in Selected Industrial Areas in Jos, Nigeria. Nigerian Journal of Environmental Sciences, 8(2), 45–52.
21. WHO. (2018). Ambient (Outdoor) Air Quality and Health. Geneva: World Health Organization.
22. Zhang, Y., Liu, Q., & Zhou, M. (2019). Industrial Clusters and their Impact on Urban Air Pollution in Eastern China. Journal of Cleaner Production, 238, 117892.