Volcanic ash leaching as a means of tracing the environmental impact of the 2011 Grímsvötn eruption, Iceland

The Grímsvötn volcanic eruption, from 21 to 28 May, 2011, was the largest eruption of the Grímsvötn Volcanic System since 1873, with a Volcanic Explosivity Index (VEI) of magnitude 4. The main geochemical features of the potential environmental impact of the volcanic ash-water interaction were deter...

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Bibliographic Details
Published in:Environmental science and pollution research international 2016-07, Vol.23 (14), p.14338-14353
Main Authors: Cabré, J., Aulinas, M., Rejas, M., Fernandez-Turiel, J. L.
Format: Article
Language:English
Subjects:
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Avaluació d'impacte ambiental
Cendres volcàniques
Earth and Environmental Science
Earthquakes
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental impact
Environmental impact analysis
Environmental Monitoring - methods
Environmental science
Geochemistry
Iceland
Ions - analysis
Ions - chemistry
Islàndia
Leaching
Morphology
Polyethylene
Research Article
Studies
Sulfides
Sulfur
Vertical flow
Volcanic ash
Volcanic eruptions
Volcanic Eruptions - analysis
Volcanoes
Volcans
Waste Water Technology
Water
Water - analysis
Water - chemistry
Water Management
Water Pollution Control
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Summary:The Grímsvötn volcanic eruption, from 21 to 28 May, 2011, was the largest eruption of the Grímsvötn Volcanic System since 1873, with a Volcanic Explosivity Index (VEI) of magnitude 4. The main geochemical features of the potential environmental impact of the volcanic ash-water interaction were determined using two different leaching methods as proxies (batch and vertical flow-through column experiments). Ash consists of glass with minor amounts of plagioclase, clinopyroxene, diopside, olivine and iron sulphide; this latter mineral phase is very rare in juvenile ash. Ash grain morphology and size reflect the intense interaction of magma and water during eruption. Batch and column leaching tests in deionised water indicate that Na, K, Ca, Mg, Si, Cl, S and F had the highest potential geochemical fluxes to the environment. Release of various elements from volcanic ash took place immediately through dissolution of soluble salts from the ash surface. Element solubilities of Grímsvötn ash regarding bulk ash composition were
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-016-6559-7