Item


Trace Element Groundwater Pollution Hazard in Regional Hydrogeological Systems (Empordà Basin, NE Spain)

Trace elements appear in natural waters as a result of rock weathering and human activities. Their occurrence is governed by a complex set of geochemical conditions which finally may induce trace element concentrations above health standards. In regional, large-scale aquifers, their presence is representative of the hydrogeological setting of the overall flow path from the recharge zone to the sampling well. In this study, we analyze hydrochemical, including major components and trace elements (Al, As, B, Ba, Cd, Co, Cr, Cu, Hg, Mn, Ni, Sb, Sn, Sr, Pb, Zn), and stable isotopic data from exploitation wells in the Empordà basin (NE Spain). Our goal is to explore the hydrogeological meaning of trace elements as a means to contribute to the understanding of the regional flow dynamics as an initial step to face trace element pollution events. Groundwater data is hence described in the context of each aquifer relating the major hydrochemical facies with their accompanying trace elements. Results point out some expected geochemical relationships as well as some trace element associations that cannot be envisaged from the usual incomplete lithological information of the aquifer. Multivariate statistical analysis, as PCA, provides complementary information about geochemical processes (loadings) and regional occurrence (scores). Such statistical information can be taken as indicative of potential health hazard associated to trace element in groundwater. From a management perspective, such analysis points out which elements should a priori be considered for analysis according to the geological formation that holds the water supply well

This study has been developed under the Spanish Government Project CGL2011-29975-c04-04 and continued under Project CGL2014-57215-C4-2-R and the University of Girona fund MPCUdG2016/061

© Water, Air, and Soil Pollution, 2016, vol. 227, p. 218

Springer Verlag

Author: Mas-Pla, Josep
Menció i Domingo, Anna
Bach i Plaza, Joan
Zamorano Cáceres, Manel
Soler i Hernàndez, David
Brusi i Belmonte, David
Date: 2016 June 1
Abstract: Trace elements appear in natural waters as a result of rock weathering and human activities. Their occurrence is governed by a complex set of geochemical conditions which finally may induce trace element concentrations above health standards. In regional, large-scale aquifers, their presence is representative of the hydrogeological setting of the overall flow path from the recharge zone to the sampling well. In this study, we analyze hydrochemical, including major components and trace elements (Al, As, B, Ba, Cd, Co, Cr, Cu, Hg, Mn, Ni, Sb, Sn, Sr, Pb, Zn), and stable isotopic data from exploitation wells in the Empordà basin (NE Spain). Our goal is to explore the hydrogeological meaning of trace elements as a means to contribute to the understanding of the regional flow dynamics as an initial step to face trace element pollution events. Groundwater data is hence described in the context of each aquifer relating the major hydrochemical facies with their accompanying trace elements. Results point out some expected geochemical relationships as well as some trace element associations that cannot be envisaged from the usual incomplete lithological information of the aquifer. Multivariate statistical analysis, as PCA, provides complementary information about geochemical processes (loadings) and regional occurrence (scores). Such statistical information can be taken as indicative of potential health hazard associated to trace element in groundwater. From a management perspective, such analysis points out which elements should a priori be considered for analysis according to the geological formation that holds the water supply well
This study has been developed under the Spanish Government Project CGL2011-29975-c04-04 and continued under Project CGL2014-57215-C4-2-R and the University of Girona fund MPCUdG2016/061
Format: application/pdf
ISSN: 0049-6979 (versió paper)
1573-2932 (versió electrònica)
Document access: http://hdl.handle.net/10256/12917
Language: eng
Publisher: Springer Verlag
Collection: MICINN/PN 2012-2015/CGL2011-29975-C04-04
Reproducció digital del document publicat a: http://dx.doi.org/10.1007/s11270-016-2891-2
Articles publicats (D-CCAA)
Is part of: © Water, Air, and Soil Pollution, 2016, vol. 227, p. 218
Rights: Tots els drets reservats
Subject: Geoquímica
Geochemistry
Aigües subterrànies -- Contaminació
Groundwater -- Pollution
Anàlisi multivariable
Multivariate analysis
Title: Trace Element Groundwater Pollution Hazard in Regional Hydrogeological Systems (Empordà Basin, NE Spain)
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

Subjects

Authors


Warning: Unknown: write failed: No space left on device (28) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/lib/php5) in Unknown on line 0