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Authors: | Bellomo, S.* D'Alessandro, W.* Longo, M.* |
Title: | Volcanogenic fluorine in rainwater around active degassing volcanoes: Mt. Etna and Stromboli Island, Italy | Journal: | Science of The Total Environment | Series/Report no.: | 301(2003) | Publisher: | Elsevier | Issue Date: | 2003 | URL: | http://www.sciencedirect.com/ | Keywords: | Fluorine Rainwater chemistry Volcanic activity Mt. Etna Stromboli Island |
Subject Classification: | 01. Atmosphere::01.01. Atmosphere::01.01.07. Volcanic effects 03. Hydrosphere::03.03. Physical::03.03.01. Air/water/earth interactions 03. Hydrosphere::03.04. Chemical and biological::03.04.03. Chemistry of waters 03. Hydrosphere::03.04. Chemical and biological::03.04.05. Gases 04. Solid Earth::04.08. Volcanology::04.08.01. Gases 05. General::05.02. Data dissemination::05.02.01. Geochemical data 05. General::05.08. Risk::05.08.01. Environmental risk |
Abstract: | Many studies have assessed the strong influence of volcanic activity on the surrounding environment. This is particularly true for strong gas emitters such as Mt. Etna and Stromboli volcanoes. Among volcanic gases, fluorine compounds are potentially very harmful. Fluorine cycling through rainwater in the above volcanic areas was studied analysing more than 400 monthly bulk samples. Data indicate that only approximately 1% of fluorine emission through the plume is deposited on the two volcanic areas by meteoric precipitations. Although measured bulk rainwater fluorine fluxes are comparable to and sometimes higher than in heavily polluted areas, their influence on the surrounding vegetation is limited. Only annual crops, in fact, show some damage that could be an effect of fluorine deposition, indicating that long-living endemic plant species or varieties have developed some kind of resistance. |
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