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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7159

Authors: D'Alessandro, W.*
Bellomo, S.*
Brusca, L.*
Karakazanis, S.*
Kyriakopoulos, K.*
Liotta, M.*
Editors: Lambrakis, N.; University of Patras, Dept. of Geology, Greece
Stournaras, G.; University of Athens, Dept. of Geology and Geoenvironment, Greece
Katsanou, K.; University of Patras, Dept of Geology, Greece
Title: The impact on water quality of the high carbon dioxide contents of the groundwater in the area of Florina (N. Greece)
Issue Date: 2011
ISBN: 978-3-642-24075-1
Keywords: Groundwater
Water quality
carbon dioxide
trace elements
Abstract: Gas and water samples were collected at CO2-rich wells in the plain of Florina (N. Greece). Chemical and isotopic composition of the analysed gases reveals their main crustal origin even if a small but significant contribution of mantle derived gases can be recognized. As a consequence of CO2 dissolution, HCO3- is always the main dissolved anion while cationic composition allows us to distinguish at least two main groups characterized by Na or Ca as dominant dissolved cations. The water-rock interaction is strongly enhanced by the dissolution of CO2 and the consequent lowering of pH. Such a process increases the mobility of some trace elements whose concentrations very often exceed UE drinking water limits. This study confirms that the Florina basin represents a good natural analogue of carbon storage systems and underscores the fact that possible deterioration of water quality due to CO2 leaks of the reservoirs must be carefully taken in account.
Appears in Collections:Book chapters
03.02.04. Measurements and monitoring
03.02.03. Groundwater processes
03.04.03. Chemistry of waters
03.04.05. Gases

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