The dynamics of mercury near Idrija mercury mine, Slovenia: Horizontal and vertical distributions of total, methyl, and ethyl mercury concentrations in soils
| Autor: | Junko Miyamoto, Hitoshi Kodamatani, Jože Kotnik, Milena Horvat, Akito Matsuyama, David Kocman, Vesna Fajon, Takashi Tomiyasu, Hirokatsu Akagi, Ryusuke Imura |
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| Rok vydání: | 2016 |
| Předmět: |
Environmental Engineering
010504 meteorology & atmospheric sciences Health Toxicology and Mutagenesis Slovenia chemistry.chemical_element 010501 environmental sciences 01 natural sciences Mining chemistry.chemical_compound Ethylmercury Soil Rivers Environmental Chemistry Soil Pollutants Organic matter Methylmercury Chemical composition 0105 earth and related environmental sciences Total organic carbon chemistry.chemical_classification Public Health Environmental and Occupational Health General Medicine General Chemistry Mercury Methylmercury Compounds Pollution Nitrogen Mercury (element) chemistry Environmental chemistry Soil water Environmental Monitoring |
| Zdroj: | Chemosphere. 184 |
| ISSN: | 1879-1298 |
| Popis: | The distributions of the total mercury (T-Hg), methylmercury (MeHg), and ethylmercury (EtHg) concentrations in soil and their relationship to chemical composition of the soil and total organic carbon content (TOC, %) were investigated. Core samples were collected from hill slope on the right and left riverbanks of the Idrija River. Former smelting plant is located on the right bank. The T-Hg average in each of the core samples ranged from 0.25 to 1650 mg kg−1. The vertical T-Hg variations in the samples from the left bank showed no significant change with depth. Conversely, the T-Hg varied with depth, with the surface, or layers several centimeters from the surface, tending to show the highest values in the samples from the right bank. Since the right and left bank soils have different chemical compositions, different pathways of mercury delivery into soils were suggested. The MeHg and EtHg concentrations ranged from n.d. (not detected) to 444 μg kg−1 and n.d. to 17.4 μg kg−1, respectively. The vertical variations of MeHg and EtHg were similar to those of TOC, except for the near-surface layers containing TOC greater than 20%. These results suggest that the decomposition of organic matter is closely related to organic mercury formation. |
| Databáze: | OpenAIRE |
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