Assessment of physico-chemical properties and metal contents of water and sediments of Bodo Creek, Niger Delta, Nigeria
| Autor: | Clare Wilson, Andrew N. Tyler, Gillian MacKinnon, Ijeoma Favour Vincent-Akpu |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Biochemical oxygen demand Cadmium Health Toxicology and Mutagenesis Chemical oxygen demand Metallurgy trace metals chemistry.chemical_element Pollution Salinity Environmental Chemistry/Technology chemistry.chemical_compound contamination sediment particle size chemistry Nitrate oil spill Environmental chemistry Environmental Chemistry Organic matter Sulfate water permissible levels Surface water |
| Zdroj: | Toxicological and Environmental Chemistry |
| ISSN: | 1029-0486 0277-2248 |
| Popis: | Some physico-chemical properties and the concentrations of the metals Fe, Mn, Ni, Cd, Cr, Co, Cu, Pb, and Zn in water and sediments were examined from September 2011 to January 2012 in Bodo Creek, where oil spills have been recurrent. Temperature, pH, total dissolved solid, conductivity, salinity, dissolved oxygen, biological oxygen demand (BOD), chemical oxygen demand (COD), total hardness, sulfate, nitrate, and phosphate were determined in surface water. Particle size, total organic matter (TOM), and pH were also determined in the sediments. The parameters were within permissible limits except the mean values of BOD, COD, total hardness, and sulfate that exceeded levels permissible for domestic use. The sediments consisted mainly of sand, with TOM ranging from 0.2% to 5.5%. With the exception of cadmium that was below detection limit, metal levels (mg kg−1) in the sediments were 12 (Mn), 1070 (Fe), 10 (Cu), 10 (Zn), 5.3 (Cr), 1.1 (Pb), 1.0 (Ni), and 0.5 (Co) while in water they were 24, 98, 21, 6.9, 4.0, 0.6, 0.18, and 0.16, respectively. The latter were higher than World Health Organization recommended permissible levels for both surface and drinking water. |
| Databáze: | OpenAIRE |
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