Levels of cadmium, chromium and lead in dumpsites soil, earthworm (Lybrodrilus violaceous), housefly (Musca domestica) and dragon fly (Libellula luctosa)
2003
Adeniyi, A.A. (Lagos State Univ. (Nigeria). Dept. of Chemical Sciences) | Idowu, A.B. | Okedeyi, O.O.
Chemical analyses of cadmium, chromium and lead in dumpsites soil, earthworm (Lybrodrilus violaceous), housefly (Musca domestica) and in indigenous dragonfly (Libellula luctosa) were performed by atomic absorption spectrophotometry to estimate the degree of metal pollution in two Lagos dumpsites located at Iba Housing Estate (dumpsite A) and Soluos along LASU - Isheri road (dumpsite B). Soil pH and moisture content were also determined. Chromium was not detected (ND) in most of the samples except in the soil samples whose mean and standard deviation (SD) were 0.43 plus minus 0.37 mug/g and 0.23 plus minus 0.37 mug/g, respectively for dumpsites A and B, and the earthworm samples harvested from dumpsite B (1.00 plus minus 1.41 mug/g). The cadmium levels were 4.00 plus minus 3.16 mug/g and 7.50 plus minus 6.37 mug/g for earthworm; 2.86 plus minus 1.43 mug/g and 4.29 plus minus 3.74 mug/g for housefly, 0.75 plus minus 1.26 mug/g and 1.25 plus minus 0.95 mug/g for dragonfly, respectively for dumpsites A and B. However, the concentration of lead in the invertebrates were, 130.00 plus minus 112.58 mug/g and 105.75 plus minus 94.44 mug/g for earthworm; 145.71 plus minus 101.87 mug/g and 225.71 plus minus 79.31 mug/g for housefly; 165.00 plus minus 69.78 mug/g and 85.00 plus minus 69.73 mug/g for dragonfly respectively for dumpsites A and B. Cadmium and lead levels were found to be higher in the invertebrates harvested from the dumpsites than those collected from the non- dumpsites. The non- dumpsite values for cadmium were 1.24 plus minus 0.94 mug/g, 0.45 plus minus 0.56 mug/g and 0.38 plus minus 0.14 mug/g for earthworm, housefly and dragonfly, respectively. Similarly, the non-dumpsite lead levels for earthworm, housefly and dragonfly were 23.12 plus minus 10.11 mug/g, 20.75 plus minus 11.85 mug/g and 33.62 plus minus 14.95 mug/g, respectively.
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