Use of Accelerated Solvent Extraction for Determination of Ecological Important Phosphorus in Lake Sediments
| Autor: | Monica Waldebäck, Emil Rydin, Karin E. Markides |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Aqueous solution
Health Toxicology and Mutagenesis Phosphorus Extraction (chemistry) Public Health Environmental and Occupational Health Soil Science chemistry.chemical_element Sediment Fractionation Pollution Soil contamination Analytical Chemistry chemistry Liquid–liquid extraction Environmental chemistry Environmental Chemistry Eutrophication Waste Management and Disposal Water Science and Technology |
| Zdroj: | International Journal of Environmental Analytical Chemistry. 72:257-266 |
| ISSN: | 1029-0397 0306-7319 |
| Popis: | Phosphorus has been identified as one of the most important elements in eutrophication of lakes, and the bulk of phosphorus compounds stored in lake sediment contribute to a large extent to this process. It is therefore of great interest to get an adequate estimate of the amount of potentially mobile phosphorus for future release from lake sediment. The traditional analytical technique, which is both labour and time consuming, consists of different steps of liquid/solid extractions. The total extraction time for the procedure used today is as long as three days. The recently developed accelerated solvent extraction technique has in this study been applied to effectively extract the mobile forms of phosphorus in sediments. By using a buffered dithionite solution at 25 °C followed by water at 100°C as solvents in sequential extractions, the total extraction process was completed within 90 minutes. The feasibility of using aqueous solutions and water as solvents with this technique is demonstrated h... |
| Databáze: | OpenAIRE |
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