Continuous-flow leaching in a rotating coiled column for studies on the mobility of toxic elements in dust samples collected near a metallurgic plant
| Autor: | Mikhail S. Ermolin, Natalia N. Fedyunina, V. K. Karandashev, Petr S. Fedotov, Alexandr I. Ivaneev, Yury G. Tatsy |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Biogeochemical cycle
Environmental Engineering Health Toxicology and Mutagenesis chemistry.chemical_element Acid Rain 010501 environmental sciences 01 natural sciences Arsenic Russia Metals Heavy Environmental Chemistry 0105 earth and related environmental sciences Air Pollutants Continuous flow 010401 analytical chemistry Public Health Environmental and Occupational Health Heavy metals Dust General Medicine General Chemistry Pollution Sulfur 0104 chemical sciences chemistry Environmental chemistry Smelting Metallurgy Acid rain Leaching (metallurgy) Environmental Monitoring |
| Zdroj: | Chemosphere. 146 |
| ISSN: | 1879-1298 |
| Popis: | Continuous-flow (dynamic) leaching in a rotating coiled column has been applied to studies on the mobility of Zn, Cd, Cu, Pb, Ni, Sb, As, S, and other potentially toxic elements in atmospherically deposited dust samples collected near a large copper smelter (Chelyabinsk region, Russia). Water and simulated "acid rain" (pH 4) were used as eluents. The technique enables not only the fast and efficient leaching of elements but as well time-resolved studies on the mobilization of heavy metals, sulphur, and arsenic in environmentally relevant forms to be made. It is shown that up to 1.5, 4.1, 1.9, 11.1, and 46.1% of Pb, As, Cu, Zn, and S, correspondingly, can be easily mobilized by water. Taking into consideration that the total concentrations of these elements in the samples under investigation are surprisingly high and vary in the range from 2.7 g/kg (for arsenic) to 15.5 g/kg (for sulphur), the environmental impact of the dust may be dramatic. The simulated acid rain results in somewhat higher recoveries of elements, except Cu and Pb. The proposed approach and the data obtained can very useful for the risk assessment related to the mobility of potentially toxic elements and their inclusion in the biogeochemical cycle. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect