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Investigation of the geochemical evolution of groundwater under agricultural land: A case study in northeastern Mexico

dc.creatorRogelio Ledesma Ruíz
dc.creatorRoberto Parra Saldivar
dc.creatorJurgen Mahlknecht
dc.date2015
dc.date.accessioned2018-10-18T21:51:04Z
dc.date.available2018-10-18T21:51:04Z
dc.identifier.issn221694
dc.identifier.doi10.1016/j.jhydrol.2014.12.026
dc.identifier.urihttp://hdl.handle.net/11285/630495
dc.descriptionZona Citrícola is an important area for Mexico due to its citriculture activity. Situated in a sub-humid to humid climate adjacent to the Sierra Madre Oriental, this valley hosts an aquifer system that represents sequences of shales, marls, conglomerates, and alluvial deposits. Groundwater flows from mountainous recharge areas to the basin-fill deposits and provides base flows to supply drinking water to the adjacent metropolitan area of Monterrey. Recent studies examining the groundwater quality of the study area urge the mitigation of groundwater pollution. The objective of this study was to characterize the physical and chemical properties of the groundwater and to assess the processes controlling the groundwater's chemistry. Correlation was used to identify associations among various geochemical constituents. Factor analysis was applied to identify the water's chemical characteristics that were responsible for generating most of the variability within the dataset. Hierarchical cluster analysis was employed in combination with a post-hoc analysis of variance to partition the water samples into hydrochemical water groups: recharge waters (Ca-HCO3), transition zone waters (Ca-HCO3-SO4 to Ca-SO4-HCO3) and discharge waters (Ca-SO4). Inverse geochemical models of these groups were developed and constrained using PHREEQC to elucidate the chemical reactions controlling the water's chemistry between an initial (recharge) and final water. The primary reactions contributing to salinity were the following: (1) water-rock interactions, including the weathering of evaporitic rocks and dedolomitization; (2) dissolution of soil gas carbon dioxide; and (3) input from animal/human wastewater and manure in combination with by denitrification processes. Contributions from silicate weathering to salinity ranged from less important to insignificant. The findings suggest that it may not be cost-effective to regulate manure application to mitigate groundwater pollution. © 2014 The Authors.
dc.languageeng
dc.publisherElsevier
dc.relationhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84920167481&doi=10.1016%2fj.jhydrol.2014.12.026&partnerID=40&md5=992bb0f47ea13e83e123c2f0cb3c1210
dc.relationInvestigadores
dc.relationEstudiantes
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.sourceJournal of Hydrology
dc.subjectAquifers
dc.subjectCalcium
dc.subjectCarbon dioxide
dc.subjectChemical analysis
dc.subjectChemical properties
dc.subjectCluster analysis
dc.subjectCost effectiveness
dc.subjectFertilizers
dc.subjectFunctional groups
dc.subjectGeochemistry
dc.subjectGroundwater
dc.subjectGroundwater flow
dc.subjectGroundwater pollution
dc.subjectGroundwater resources
dc.subjectHierarchical systems
dc.subjectHydrochemistry
dc.subjectHydrogeology
dc.subjectManures
dc.subjectPollution
dc.subjectPotable water
dc.subjectProcess control
dc.subjectSilicates
dc.subjectWater
dc.subjectWater pollution
dc.subjectWater quality
dc.subjectWeathering
dc.subjectCarbonate aquifer
dc.subjectDedolomitization
dc.subjectGeochemical models
dc.subjectMe-xico
dc.subjectNitrate pollution
dc.subjectWater rock interactions
dc.subjectRecharging (underground waters)
dc.subjectagricultural land
dc.subjectaquifer pollution
dc.subjectchemical weathering
dc.subjectdenitrification
dc.subjectdrinking water
dc.subjectgeochemical method
dc.subjectgroundwater pollution
dc.subjecthumid environment
dc.subjectnumerical model
dc.subjectrecharge
dc.subjectsoil carbon
dc.subjectwater-rock interaction
dc.subjectMexico [North America]
dc.subjectMonterrey
dc.subjectNuevo Leon
dc.subjectSierra Madre Oriental
dc.subjectSierra Madre [Mexico]
dc.subject.classification7 INGENIERÍA Y TECNOLOGÍA
dc.titleInvestigation of the geochemical evolution of groundwater under agricultural land: A case study in northeastern Mexico
dc.typeArtículo
dc.identifier.volume521
dc.identifier.startpage410
dc.identifier.endpage423
refterms.dateFOA2018-10-18T21:51:04Z


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