| Autor: |
Musa R; Department of Zoology, University of Johannesburg (Auckland Park Kingsway Campus), PO Box 524, Auckland Park, 2006, South Africa., Gerber R; Department of Zoology, University of Johannesburg (Auckland Park Kingsway Campus), PO Box 524, Auckland Park, 2006, South Africa., Greenfield R; Department of Zoology, University of Johannesburg (Auckland Park Kingsway Campus), PO Box 524, Auckland Park, 2006, South Africa. rgreenfield@uj.ac.za. |
| Jazyk: |
angličtina |
| Zdroj: |
Bulletin of environmental contamination and toxicology [Bull Environ Contam Toxicol] 2017 Jun; Vol. 98 (6), pp. 817-823. Date of Electronic Publication: 2017 May 08. |
| DOI: |
10.1007/s00128-017-2100-z |
| Abstrakt: |
Increased toxicity due to high metal concentrations may hinder the ecological integrity of aquatic ecosystems in sustaining life. The non-biodegradable nature of metals may result in bioaccumulation in aquatic organisms. Due to ecological and social aspects it is imperative for monitoring schemes to identify possible impacts to the systems integrity. This paper discusses accumulation patterns of seven metals (Al, Cr, Cu, Fe, Mn, Sr and Zn) in tissues of two fish species, namely Clarias gariepinus and Oreochromis mossambicus at two selected sites, the first located upstream of Modimolle (NRS1), and the second located downstream of the town (NRS2). Gills, liver, muscle and skin tissues were analysed for metal concentrations using standard microwave digestion and inductively coupled plasma mass spectrometry techniques. Statistical results indicated higher concentrations of metals at NRS2 in comparison to NRS1, indicating that Modimolle plays a potential role in introducing metals into the aquatic system. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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