Publisher: Bachudo Science Co. Ltd

Heavy Metals In Top Soils of Abeokuta Dump Sites

O. D. Odukoya, O. Bamgbose, T. A. Arowolo
KEYWORDS: HEAVY METALS IN TOP SOILS OF ABEOKUTA DUMP SITES

ABSTRACT:

The concentrations of copper, zinc, cadmiwn, lead and iron in top soils of refuse dump sites in Abeokuta were determined in order to as.sess the conlribution of refuse in the dmnp sites to environmental pollution. Twenty soil samples were collected from twenty dump sites each of which was about 100 metres away from a control site. Study samples and controls were pre­treated, digested and analysed using flame atomic absorption spectrophotometer. Results show that the range of copper was 65.77 - 634.30 mg/kg; iron: 289.30 - 360.10 mglkg; lead: 5.52 - 145.80 mg/kg; zinc: 100.80 - 226.60 mg/kg and cadmium: 4.65 • 50.50 mg/kg in the refuse dump sites while tlle control sites had a range of 0. 76 4.54 mg/kg for copper, 3.04 - 7706 mg/kg for iron, 0.81 - 13.07 mg/kg for lead, 51.25 - 71.43 mg/kg for zinc and 0.81 - 3.64 mg/kg for cadmium.The large difference between the results obtained for refuse dump site and control site are statistically significant., indicating that the refuse dump sites are sources of environmental metal pollution. It is recommended that indiscriminate dumping of refuse be discouraged.


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Heavy Metals In Top Soils Of Abeokuta Dump Sites
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