Concentration of Heavy Metals in Respirable Dust in Jos Metropolitan Area, Nigeria


The concentration of respirable dust at seven sampling stations in Jos metropolitan area, was measured weekly for three consecutive months (October 2012 to December 2012). Characterization of the dust particles shows that the concentration of fine dust (<2.5 μm) ranged from 55.0 - 124.9 μg/m3 while the coarse dust (2.5 - 10 μm) varied from 20.0 - 124.4 μg/m3. FAAS analysis of the respirable dust shows that the concentrations of heavy metals ranged from 0.121 - 0.832 mg/kg Pb, 0.019 - 0.111 mg/kg Cr, 0.171 - 1.081 mg/kg Fe, 0.002 - 0.056 mg/kg Mn, 0.002 - 0.438 mg/kg Cd, 0.696 - 1.712 mg/kg Zn, 0.025 - 0.571 mg/kg Cu, and 0.021 - 0. 478 mg/kg Ni, across the sites studied. The main sources of these heavy metals in the sampled area could be attributed to anthropogenic activities like open incineration of waste and vehicular traffic. The concentrations of Cd, Mn and Ni were found to be far above the standard limits prescribed by the WHO for respirable dust. These results convey the health risk the inhabitants in the study area are exposed to. We therefore recommend that measures be taken to regulate these anthropogenic activities

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Mafuyai, G. , Eneji, I. and Sha’Ato, R. (2014) Concentration of Heavy Metals in Respirable Dust in Jos Metropolitan Area, Nigeria. Open Journal of Air Pollution, 3, 10-19. doi: 10.4236/ojap.2014.31002.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Shinggu, D.Y., Ogugbuaja, V., Toma, O. and Barminas, J.T. (2010) Determination of Heavy Metals in Street Dust in Yola, Nigeria. African Journal of Pure and Applied Chemistry, 4, 17-20.
[2] Lopez, J.M., Callen, M.S., Murillo, R., Garcia, T., Navarro, M.V., de la Cruz, M.T. and Mastral, A.M. (2005) Levels of Selected Metals in Ambient Air PM10 in an Urban Site of Zaragoza, Spain. Environmental Research, 99, 58-67.
[3] Melaku, S., Morris, V., Raghavan, D. and Hosten, C. (2008) Seasonal Variation of Heavy Metals in Ambient Air and Precipitation, at a Single Site in Washington, DC. Environmental Pollution, 155, 88-98.
[4] Bhargava, A., Gupta, K., Bhargava, R. and Pardhi, S. (2003) The Effects Automobile Exhaust on Total N, P and Heavy Metals of Road Side Sugarcane at District, Saharanpur. Ad Plant Science, 16, 557-560.
[5] Awan, M.A. and Ahmed, S.H. (2011) Determination of Total Suspended Particulate Matter and Heavy Metals in Ambient Air of Four Cities of Pakistan. Ironical Journal of Energy & Environment, 2, 128-132.
[6] Lazor, P., Tomas, J., Toth, T., Toth, J. and Ceryova, S. (2012) Monitoring of Air Pollution and Atmospheric Deposition of Heavy Metals by Analysis of Honey. Journal of Microbiology, Biotechnology and Food Sciences, 1, 522-533.
[7] Kim, K., Lee, J. and Jang, M. (2002) Metals in Airborne Particulate Matter from the First and Second Industrial Complex Area of Taejon City, Korea. Environmental Pollution, 118, 41-51.
[8] Shah, J., Nagpa, J.T. and Brnadon, C. (2006) Urban air Quality Management Strategy in Asia-Guide Book. The World Bank, USA, 17-21.
[9] Ahmed, F. and Ishiga, H. (2006) Trace Metals Concentration in Street Dusts of Dhaka City Bangladesh. Atmospheric Environment, 40, 3835-3844.
[10] Sezgin, N., Ozean, H.K., Demir, G., Nemlioglu, S. and Bayet, C. (2006) Determination of Heavy Metals in Street Dust in Istanbul Highway. Environmental International, 29, 797-985.
[11] Aybek, A. and Selcuk, A. (2007) Dust Exposures in Tractor and Combine Operations in Eastern Mediterranean, Turkey. Journal of Environmental Biology, 28, 717-722.
[12] Pope, C.A., Bates, D.A. and Raizenne, M.E. (1995) Health Effects of Particulate Air Pollution: Time for Reassessment? Environmental Health Perspective, 103, 472-479.
[13] Gbadebo, A.M. and Bankole, O.D. (2007) Analysis of Potententially Toxic Metals in Airborne Cement Dust around Sagamu South Western Nigeria. Journal of Applied Sciences, 7, 35-40.
[14] Rao, M.N. and Rao, H.V.N. (1989) Air Pollution. Data McGraw-Hill Publishing Company Ltd., New Delhi, 10-25.
[15] Tsor, O.J. (2003) The Characterization of Atmospheric Aerosol during Harmattan in Three Nigerian Cities. M.Sc. Thesis, University of Jos, Jos.
[16] Stone, E.A., Yoon, S.C. and Schauer, J.J. (2011) Chemical Characterization of Fine and Coarse Particles in Gosan, Korea during Springtime Dust Events. Aerosol Air Quality Research, 11, 31-43.
[17] Zhao, J., Zhang, F., Xu, Y., Chen, J., Yin, L., Shang, X. and Xu, L. (2011) Chemical Characterizations of Particulate Matter during a Heavy Dust Episode in a Coastal City, Xiamen. Aerosol Air Quality Research, 11, 299-308.
[18] Sombo, T. (2006) Thesis Particulate Matter Sampling and Characterization. M.Sc. Thesis, University of Agriculture, Makurdi.
[19] Peters, A., Dockery, D.W., Millerm J.F. and Mittelman, M.A. (2001) Increase Particulate Matter and the Triggering Myocardial Infarction. Circulation, 103, 2810-2815.
[20] Curtis, L., Pea, W., Smith-Willis, P., Fenyves, E. and Pan, Y. (2006) Adverse Health Effects of Outdoor Air Pollutants. Environment International, 32, 815-830.
[21] Vandana, T., Gurjar, B.R., Joshi, N. and Kumar, P. (2011) PM10 and Heavy Metals in Suburban and Rural Atmospheric Environments of Northern India. Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee.
[22] National Environmental Protection Council (NEPC) (2002) Ambient Air Quality Standards.
[23] USEPA (2012) Air Quality Criteria for Particulate Matter. Vol. 1-3, Office of Research and Development, Washington DC (EPA Report No.EPA/001a-c).

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