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|Title: ||Assessment of the levels of cadmium and lead in soil and vegetable samples from selected dumpsites in the Kumasi Metropolis of Ghana|
|Authors: ||Twumasi, Peter|
Tandoh, Marina A.
Borbi, Makafui A.
Ajoke, Adigun R.
Owusu- Tenkorang, Emmanuel
Dumevi, Rexford M.
|Keywords: ||Cadmium (Cd)|
|Issue Date: ||5-May-2016|
|Publisher: ||African Journal of Agricultural Research|
|Citation: ||African Journal of Agricultural Research;Vol. 11(18), pp. 1608-1616, 5 May, 2016 ;DOI: 10.5897/AJAR2016.10907|
|Abstract: ||Many dumpsites in the urban communities in Ghana are used for cultivation of crops, especially
vegetables. However, these dumpsites may serve as potential sources of soil heavy metals that could
enter the food chain mainly through cultivated food crops with serious consequences on human health.
This study investigated the levels of two heavy metals, lead (Pb) and cadmium (Cd), in the soil and
tissues of vegetables grown on such dumpsites. Soil and tissue (lettuce, cabbage, spring onion, tomato
and the leaves of Xanthosoma sagitifolium) samples were collected from ten locations with two of these
locations used as control. The samples were acid-digested and the metal concentrations determined
using atomic absorption spectrometry. Pb and Cd contents of soils from all the eight dumpsites and
one of the control locations were above the guidelines recommended by FAO and WHO. The highest Cd
level in the soil (13.6 mgkg-1 of Cd) was found at Aketego dumpsite and the highest soil Pb (36.1 mgkg-1
Pb) was recorded at Meduma dumpsite. The leafy vegetables, cabbage, lettuce and X. sagitifolium
(locally called ‘kontomire’) recorded relatively higher amounts of Pb and Cd in the edible parts. Further
studies are required to determine how much of the daily diet these vegetables contribute to the total
diets of the population and special attention to calculating the overall daily doses of Cd and Pb to
pregnant mothers and children <5 years of age is thus warranted.|
|Description: ||An article published by African Journal of Agricultural Research;Vol. 11(18), pp. 1608-1616, 5 May, 2016 ;DOI: 10.5897/AJAR2016.10907|
|Appears in Collections:||College of Science|
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