Metal levels in some refuse dump soils and plants in Ghana
2010
Agyarko, K.,University of Education, Winneba (Ghana). Coll. of Agriculture Education | Darteh, E.,University of Education, Winneba (Ghana). Coll. of Agriculture Education | Berlinger, B.,National Inst. of Occupational Health, Oslo (Norway)
Concentrations of Cd, Hg, Pb, Cr, Fe, Co, Ni, Cu, Zn, Mo and As were determined in soils and leaves of plants from refuse dumpsites and background soils in two cities, a municipality and a rural community in Ghana, using a ThermoFinnigan Element 2 high resolution inductively coupled plasma mass spectrometric (HR-ICP-MS) instrument. The refuse dump soils were classified between uncontaminated to moderate and strongly contaminated. Pollution levels for Cd (Igeo = 2.06-2.40) and Zn (Igeo = 2.95-3.36) were higher than for the other metals. The refuse dump soil from the rural community was the least polluted. Fe and Ni loads in plants from the refuse dump soils in the cities and the municipality were beyond the normal ranges of 40-500 microg/g (Fe) and 0.02-5.00 microg/g (Ni). Transfer ratios for Cd, Hg, Cu, Zn and Pb and Fe of plants from the background soils were higher than those from the refuse dump soils, which might be due to the higher levels of organic matter, pH, phosphate, Ca and Mg in the refuse dump soils.
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