Volcanogenic fluorine in rainwater around active degassing volcanoes: Mt. Etna and Stromboli Island, Italy

• Main Authors: Bellomo, S., D'Alessandro, W., Longo, M.
• Other Authors: Bellomo, S.; Dipartimento CFTA, Universita di Palermo, via Archirafi 36, 90123 Palermo, Italy, D'Alessandro, W.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia, Longo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia, Dipartimento CFTA, Universita di Palermo, via Archirafi 36, 90123 Palermo, Italy, Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier 2003
• Subjects: Fluorine; Rainwater chemistry; Volcanic activity; Mt. Etna; Stromboli Island; 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; Arctic
• Online Access: http://hdl.handle.net/2122/515; http://www.sciencedirect.com/

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. Published 175–185 partially_open