Abstract
Plants and sediments were collected at three sites along Calabar River (CR), Upper Town Creek (UCC) and Lower Town Creek (LCC). The CR is a major tributary of Cross River, Nigeria. The concentrations of 10 heavy metals were determined and results for Fe, Mn and Zn at almost all the sites showed that the levels of these metals exceeded the amounts present in non-polluted areas. Fe was found in the highest concentration at all three sites in both plants and sediments. Correlation analysis between levels of heavy metals in plants and sediments were also determined. The occurrence of higher concentrations of heavy metals in plants and coastal sediments at CR, UCC and LCC is an indication of anthropogenically induced pollution rather than contributions from natural sources. © 2007 Taylor & Francis.
Original language | English |
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Pages (from-to) | 7-14 |
Number of pages | 8 |
Journal | Toxicological and Environmental Chemistry |
Volume | 89 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jan 2007 |
Keywords
- Calabar River
- Heavy metals
- Nigeria
- Panicum laxum
- Sediments