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dc.contributor.authorMenció, Anna
dc.contributor.authorMas-Pla, Josep
dc.contributor.authorOtero, Neus
dc.contributor.authorRegàs, Oriol
dc.contributor.authorBoy-Roura, Mercé
dc.contributor.authorPuig, Roger
dc.contributor.authorBach, Joan
dc.contributor.authorDomènech Ortí, Cristina
dc.contributor.authorZamorano, Manuel
dc.contributor.authorBrusi, David
dc.contributor.authorFolch Sancho, Albert
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2016-05-09T08:38:11Z
dc.date.available2017-09-09T00:30:38Z
dc.date.issued2016-01-01
dc.identifier.citationMenció, A., Mas-Pla, J., Otero, N., Regàs, O., Boy-Roura, M., Puig, R., Bach, J., Domènech, C., Zamorano, M., Brusi, D., Folch, A. Nitrate pollution of groundwater; all right. . ., but nothing else?. "Science of the total environment", 01 Gener 2016, vol. 539, p. 241-251.
dc.identifier.issn0048-9697
dc.identifier.urihttp://hdl.handle.net/2117/86747
dc.description.abstractContamination from agricultural sources and, in particular, nitrate pollution, is one of the main concerns in groundwater management. However, this type of pollution entails the entrance of other substances into the aquifer, as well as it may promote other processes. In this study, we deal with hydrochemical and isotopic analysis of groundwater samples from four distinct zones in Catalonia (NE Spain), which include 5 different aquifer types, to investigate the influence of fertilization on the overall hydrochemical composition of groundwater. Results indicate that intense fertilizer application, causing high nitrate pollution in aquifers, also homogenize the contents of the major dissolved ions (i.e.; Cl-, SO42-, Ca2+, Na+, K+, and Mg2+). Thus, when groundwater in igneous and sedimentary aquifers is compared, significant differences are observed under natural conditions for Cl-, Na+ and Ca2+ (with p-values ranging from <0.001 to 0.038), and when high nitrate concentrations occur, these differences are reduced (most p-values ranged between 0.054 and 0.978). Moreover, positive linear relationships between nitrate and some ions are found indicating the magnitude of the fertilization impact on groundwater hydrochemistry (with R2 values of 0.490, 0.609 and 0.470, for SO42-, Ca2+ and Cl-, respectively). Nevertheless, the increasing concentration of specific ions is not only attributed to agricultural pollution, but to their enhancing effect upon the biogeochemical processes that control water-rock interactions. Such results raise awareness that these processes should be evaluated in advance in order to assess an adequate groundwater resources management.
dc.format.extent11 p.
dc.language.isoeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria agroalimentària::Impacte ambiental
dc.subject.lcshNitrates
dc.subject.lcshWater -- Pollution
dc.subject.otherGroundwater
dc.subject.otherHydrochemistry
dc.subject.otherMultivariate analysis
dc.subject.otherNitrate isotopes
dc.subject.otherNitrate pollution
dc.subject.otherWater-rock interaction
dc.titleNitrate pollution of groundwater; all right. . ., but nothing else?
dc.typeArticle
dc.subject.lemacNitrats
dc.subject.lemacAigua -- Contaminació
dc.contributor.groupUniversitat Politècnica de Catalunya. GHS - Grup d'Hidrologia Subterrània
dc.identifier.doi10.1016/j.scitotenv.2015.08.151
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0048969715306537
dc.rights.accessOpen Access
local.identifier.drac17072356
dc.description.versionPostprint (author's final draft)
local.citation.authorMenció, A.; Mas-Pla, J.; Otero, N.; Regàs, O.; Boy-Roura, M.; Puig, R.; Bach, J.; Domènech, C.; Zamorano, M.; Brusi, D.; Folch, A.
local.citation.publicationNameScience of the total environment
local.citation.volume539
local.citation.startingPage241
local.citation.endingPage251


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