English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/209061
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Environmental geochemistry of ancient volcanic ashes

AuthorsRuggieri, F.; Saavedra, J.; Fernandez-Turiel, J. L. ; Gimeno, D.; Garcia-Valles, M.
Keywordsvolcanic ash
geochemistry
leaching
Puna
Catamarca
Argentina
Issue Date2010
PublisherElsevier
CitationJournal of Hazardous Materials
Abstract[EN] Volcanic ashes from the Puna and surrounding Andean areas in northern Argentina show that sometimes volcanic ash deposits are very well preserved (up to several million years) and can remain a potential hazard for the environment in a similar way as current deposits. Eight ashes have been characterized by SEM-EDX and DRX, and their potential released geochemical fluxes were examined by using water and nitric acid batches, which are analyzed by ICP-OES, ICP-MS and ISE (F). Results demonstrate that water batch system is better medium than nitric acid for this study. The high and fast reactivity of these ancient ashes is mainly associated with their high content in glass. The order of magnitude of released contents of implied elements is consistent among the samples, i.e., Al>B>Fe>Zn>F>P>Mn>Ba>Sr>Li>Ti>Rb>Cu>Ni>Sb>Pb>As>Cr>V. Ash-water interaction, although infrequent in arid regions such as the Puna Region in northern Argentina, introduces rapid changes in the geochemical fluxes of elements and pH and may constitute a potential hazard for the environment. In fact, many of these elements are included in the drinking water guidelines due to their potential toxicity and may constitute potential hazards for the environment and human health.
DescriptionRuggieri F., Saavedra J., Fernandez-Turiel J. L., Gimeno D., Garcia-Valles M. Environmental geochemistry of ancient volcanic ashes. J. Haz. Materials (ISSN 0304-3894), 2010, 183, 353-365. https://doi.org/10.1016/j.jhazmat.2010.07.032
URIhttp://hdl.handle.net/10261/209061
DOIhttps://doi.org/10.1016/j.jhazmat.2010.07.032
ISSN0304-3894
Appears in Collections:(ICTJA) Artículos
Files in This Item:
File Description SizeFormat 
Ruggieri-ancient_volcanic_ashes-JHazMat_2010-postprint.pdfArtículo post-print1,01 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.