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Characterization of odourous compounds in air, leachate, stream and well in and around Taju-Bello Dumpsite, Lagos, Nigeria

  • Azeez, L. (Industrial and Environmental Chemistry Unit, Chemical Sciences Department, Fountain University) ;
  • Oyedeji, O.A. (Department of Science Laboratory Technology, The Federal Polytechnic Ilaro) ;
  • Abdulsalami, I.O. (Industrial and Environmental Chemistry Unit, Chemical Sciences Department, Fountain University) ;
  • Adewuyi, S.O. (Department of Pure and Applied Chemistry, Ladoke Akintola University of Technology)
  • Received : 2013.04.19
  • Accepted : 2013.05.28
  • Published : 2013.06.25
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Abstract

This study investigated the concentrations of odourous compounds in air, leachate, stream and well in and around Taju-Bello dumpsite. Meteorological parameters (temperature, relative humidity, wind velocity) and six odour families comprising sulphur ($H_2S$), ammonia ($NH_3$), aromatic (benzene, toluene, ethylbenzene, styrene, p-xylene, m-xylene), aliphatic (hexane), oxygenated (formaldehyde, acetaldehyde) and halogenated (tetrachloroethene, trichloroethene, carbontetrachloride) compounds were measured. Meteorological parameters suggested low dispersal of pollutants at L1 with possible perspiration and suffocation from exposure to high temperature, relative humidity and low wind velocity. The trend of abundance of odourous compounds at studied locations is of the order dumpsite (L1) > leachate (L4) > 100 m away from dumpsite (L2) > 200 m away from dumpsite (L3) > stream (L5) > well (L6). $H_2S$, Oxygenated and aromatic compounds were the major contributors to odour strength in these locations. Correlation, factor and cluster analyses of the data revealed similarities of sources as biogenics and xenobiotics inherent in the wastes as the main sources of these odourous compounds.

Keywords

References

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