Methods of Assessment of Metal Contamination in Bottom Sediments (Case Study: Straszyn Lake, Poland)
| Autor: | Eliza Kulbat, Aleksandra Sokołowska |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Pollution
Geologic Sediments Metal contamination 010504 meteorology & atmospheric sciences Health Toxicology and Mutagenesis media_common.quotation_subject Carbonates Biological Availability 010501 environmental sciences Chemical Fractionation Toxicology 01 natural sciences Risk Assessment Article chemistry.chemical_compound Metals Heavy Ecotoxicology Organic matter 0105 earth and related environmental sciences media_common chemistry.chemical_classification Chemistry Extraction (chemistry) General Medicine Contamination Bioavailability Lakes Environmental chemistry Carbonate Poland Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Archives of Environmental Contamination and Toxicology |
| ISSN: | 1432-0703 |
| Popis: | The concentrations of six metals (Zn, Cu, Pb, Ni, Cr, and Cd) were investigated in bottom sediments of Straszyn Lake (North Poland). This study was designed to determine a total content of metals and to assess their mobility and bioavailability. The sequential extraction was used to fractionate metals into five fractions: exchangeable, bound to carbonates, bound to Fe–Mn oxides, bound to organic matter, and residual. The evaluation of sediments contamination degree by metals was performed by applying the geochemical quality guidelines, the pollution load index, and the geo-accumulation index (Igeo). The assessment based on these methods demonstrated that sediments were polluted with Cr and the sediments quality guidelines confirmed these results. Moreover, the average concentrations of Cu, Ni, and Cr were respectively 3.4, 3.9, and 21.2 times higher than their background values. According to ecological risk index and risk assessment code Cd was the most important factor affecting the ecological environment of the Straszyn Lake. The metal speciation analysis demonstrated that the mean percentage of metals in the exchangeable and carbonate fractions decreased in the following order: Cd (59.1%) > Zn (19.8%) = Ni (19.8%) > Pb (16.6%) > Cu (3.3%) > Cr (2.7%). The very strong correlation calculated between all the metals indicated their common origin. |
| Databáze: | OpenAIRE |
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