Investigation into the metal contamination of the Plankenburg and Diep Rivers, Western Cape, South Africa
| Autor: | Vanessa Angela Jackson, A.N. Paulse, Wesaal Khan, James P Odendaal |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Pollution
Plankenburg- and Diep River water media_common.quotation_subject ICP-AES Sediment Management Monitoring Policy and Law Contamination Applied Microbiology and Biotechnology metal contamination Water resources Point source pollution sediment water and sediment quality guidelines Inductively coupled plasma atomic emission spectroscopy Environmental chemistry Environmental science Water quality Surface runoff ICP-AES metal contamination Plankenburg- and Diep River water sediment water and sediment quality guidelines Waste Management and Disposal Water Science and Technology media_common |
| Zdroj: | Water SA; Vol 35, No 3 (2009) Water SA, Volume: 35, Issue: 3, Pages: 289-299, Published: APR 2009 |
| ISSN: | 0378-4738 |
| Popis: | Metal contamination in the Plankenburg and Diep Rivers (Western Cape) was investigated over a 12 and 9 month period, respectively. Aluminium (Al), copper (Cu), iron (Fe), lead (Pb), manganese (Mn), nickel (Ni) and zinc (Zn) concentrations were determined using the nitric acid digestion method and analysed by inductively coupled plasma atomic emission spectrometry (ICP-AES). For both rivers the Al and Fe concentrations were higher than that for all the other metals analysed for in sediment and water samples. The highest concentrations recorded in the Plankenburg River were 13.6 mgE.-1 (water . Week 18, Site B) and 15 018 mgEkg-1 (sediment . Week 1, Site C) for Al, and 48 mgE.-1 (water . Week 43, Site A) and 14 363.8 mgEkg-1 (sediment . Week 1, Site A) for Fe. The highest concentrations recorded in the Diep River were 4 mgE.-1 (water . Week 1, Site A) and 19 179 mgEkg-1 (sediment . Week 1, Site C) for Al, and 513 mgE.-1 (water . Week 27, Site A) and 106 379.5 mgEkg-1 (sediment . Week 9, Site C) for Fe. For most of the metals analysed the concentrations were higher than the recommended water quality guidelines as stipulated by the Department of Water Affairs and Forestry, the Canadian Council for the Ministers of the Environment and the accepted eworld averagef. Point sources of pollution could not be conclusively identified, but runoff from both industrial and residential areas could have contributed to the increased concentrations. Metal concentrations should be routinely monitored and the guidelines should be updated and revised based on the current state of the rivers and pollution sources. |
| Databáze: | OpenAIRE |
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