Abstract
The magnitude of contamination, regulatory compliance and annual loadings of soils with copper (Cu), zinc (Zn), cadmium (Cd), nickel (Ni), chromium (Cr) and lead (Pb) were determined at three sites in Harare where wastewater was used to irrigate vegetable gardens for at least 10 years. Heavy metal total concentrations (mg kg-1) in sandy and sandy–clay soils of pH 5.1–8.1 from all sites ranged from 7.0 to 145 for Cu, 14 to 228 for Zn, 0.5 to 3.4 for Cd,
Original language | English |
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Pages (from-to) | 151-165 |
Journal | Agriculture, Ecosystems and Environment |
Volume | 107 |
Issue number | 2-3 |
DOIs | |
Publication status | Published - 2005 |
Keywords
- sewage-sludge
- effluent
- zn
- ni
- cu