African Journal of
Environmental Science and Technology

  • Abbreviation: Afr. J. Environ. Sci. Technol.
  • Language: English
  • ISSN: 1996-0786
  • DOI: 10.5897/AJEST
  • Start Year: 2007
  • Published Articles: 1041

Full Length Research Paper

Assessment of some heavy metals in the surrounding soils of an automobile battery factory in Ibadan, Nigeria

Peter Olaoye Oyeleke
  • Peter Olaoye Oyeleke
  • Department of Science Laboratory Technology, Federal College of Animal Health and Production Technology, Moor Plantation, Ibadan, Oyo State, Nigeria.
  • Google Scholar
Olushola Ayoola Abiodun
  • Olushola Ayoola Abiodun
  • Department of Biological Oceanography, Nigerian Institute of Oceanography and Marine Research, Victoria Island, Lagos, Nigeria.
  • Google Scholar
Rasaki Alao Salako
  • Rasaki Alao Salako
  • Department of Science Laboratory Technology, Federal College of Animal Health and Production Technology, Moor Plantation, Ibadan, Oyo State, Nigeria.
  • Google Scholar
Olusanmi Ebenezer Odeyemi
  • Olusanmi Ebenezer Odeyemi
  • Department of Science Laboratory Technology, Federal College of Animal Health and Production Technology, Moor Plantation, Ibadan, Oyo State, Nigeria.
  • Google Scholar
Tolulope Bayode Abejide
  • Tolulope Bayode Abejide
  • Department of Science Laboratory Technology, Federal College of Animal Health and Production Technology, Moor Plantation, Ibadan, Oyo State, Nigeria.
  • Google Scholar


  •  Received: 07 August 2015
  •  Accepted: 16 September 2015
  •  Published: 31 January 2016

Abstract

The levels of heavy metals (Pd, Zn, Cr, Cd, Fe and Cu in mg/kg) in soils were assessed with respect to distance in different directions around an abandoned battery company in Ibadan, Western Nigeria by using flame atomic absorption spectrophotometry method. The results generally show a decrease of lead (Pb) concentrations with increase in distance away from the company in all the four different directions (Northwest, Northeast, Southwest and Southeast). The other heavy metals assessed do not show any clear trend with distance away from the factory. The mean concentrations of Pb, Zn, Cr, Cd, Fe and Cu were 59.13±48.9 (range 5.00 - 182.00 mg/kg), 2.68±1.1 (range 0.4 - 5.2 mg/kg), 1.62±2.4 (range ND - 8.7 mg/kg), 0.08±0.09 (range ND - 0.24 mg/kg), 49.44±16.5 (range 12.5 - 70 mg/kg) and 4.94±2.6 mg/kg (range 0.5 - 10.5 mg/kg), respectively. The mean concentration of Pb was far above (four times higher than) the normal crustal average for soils while the other heavy metals were below the normal background level. The concentration of Pb is also the highest at the distance closest to the factory which indicate that Pb is the major heavy metal impacted on soils by the company which elevate the normal background level and thereby contaminate the soils and make it unfit for agricultural purposes as plant take up the leached metals and ultimately find its way into animals and human body through the food chain.

 

Key words: Food chain, Battery Company, lead pollutant, assessment, agricultural purposes, anthropogenic sources