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Hydrogeochemical, isotopical and ecotohicological approach to the Paranhos spring galleries catchworks from Porto urban area (nw Portugal)

2006-07-12Comunicação em conferência Acesso aberto
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datacite.subject.fosEngenharia e Tecnologia::Outras Engenharias e Tecnologias
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorGuimarães, Laura
dc.contributor.authorAfonso, Maria José
dc.contributor.authorI. Chaminé, Helder
dc.contributor.authorMarques, José M.
dc.contributor.authorCarreira, Paula
dc.contributor.authorCosta, Isilda
dc.contributor.authorTeixeira, José
dc.contributor.authorGuilhermino, Lúcia
dc.contributor.authorCarvalho, José Martins
dc.contributor.authorFonseca, Paulo E.
dc.contributor.authorRocha. Fernando T.
dc.contributor.editorBeleza, Vitorino
dc.date.accessioned2026-04-28T13:07:19Z
dc.date.available2026-04-28T13:07:19Z
dc.date.issued2006-07-12
dc.description.abstractThis multidisciplinary study presents the preliminary results of the hydrogeochemical, isotopical and ecotoxicological analyses performed to assess the nature and suitability for use of groundwater from the Paranhos’ spring galleries catchworks. These springs constituted for more than five centuries one of the main water supplies to Porto city. For the characterisation of the underground area (ca. 3km extension and a-25m of depth), constituted mainly by granitic rocks, the following tools were applied: i) subsurface geological and geotechnical mapping and; ii) hydrogeological, isotopical and ecotoxicological techniques. Surface and subsurface fieldwork surveys were first carried out to identify major tectonic accidents responsible for groundwater circulation paths and to assess lithological and structural heterogeneity. Hydrogeological fieldwork campaigns were then performed, and in situ determinations included: temperature (°C), pH and electrical conductivity (uS/cm). Several sampling sites were subsequently established, based on the surface activities located on the course of the springs, and water samples were collected for hydrogeochemical, isotopical and ecotoxicological analyses. All the water samples have been analysed for major element concentration. The isotopic techniques employed included d2H and d18O. For ecotoxicological evaluation standard acute bioassays with Daphnia magna were performed. For each sample, two 48h-LC5o bioassays were simultaneously performed: one with PH correction and the other without pH correction. In each bioassay, five concentrations of groundwater were prepared by dilution of the original sample with ASTM hard water. The hydrogeochemical analyses showed a nitrate and sulphate-enriched composition for these groundwaters, probably resulting from intense urbanisation, sewer leakage and some agricultural practices. Concerning the ecotoxicological analyses, no mortality was observed in any of the tests performed. The results obtained in this study suggest that part of Porto urban groundwater could be suitable for irrigation uses, but additional tests must be carried out to verify its compliance with existing standards of water quality. Specifically, geoenvironmental and ecotoxicological studies are required to assess potential variations in water composition and toxicity associated with seasonal changes in climate and human activities.eng
dc.identifier.citationAfonso, M. J., Chaminé, H. I., Guimarães, L., Marques, J. M., Carreira, P., Costa, I., Teixeira, J., Carvalho, J. M., Guilhermino, L., Fonseca, P. E. & Rocha, F. T. (2006, july 12-14). Hydrogeochemical, isotopical and ecotohicological approach to the Paranhos spring galleries catchworks from Porto urban area (nw Portugal). In Beleza, B. (Ed.) Conferência internacional sobre a água - IWC 2006. (pp.213-222). Porto, Portugal.
dc.identifier.isbn972-8688-40-7
dc.identifier.urihttp://hdl.handle.net/10400.22/32317
dc.language.isoeng
dc.peerreviewedn/a
dc.publisherISEP - Instituto Superior de Engenharia do Porto
dc.rights.uriN/A
dc.subjectGroundwater
dc.subjectPorto urban area
dc.subjecthydrogeochemistry
dc.subjectisotope hydrology
dc.subjectDaphnia magna bioassays
dc.titleHydrogeochemical, isotopical and ecotohicological approach to the Paranhos spring galleries catchworks from Porto urban area (nw Portugal)eng
dc.typeconference paper
dspace.entity.typePublication
oaire.citation.conferenceDate2006-07-12
oaire.citation.conferencePlacePorto, Portugal
oaire.citation.endPage222
oaire.citation.startPage213
oaire.citation.titleIWC2006 - Conferência Internacional sobre a Água
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameAfonso
person.familyNameI. Chaminé
person.familyNameCarvalho
person.givenNameMaria José
person.givenNameHelder
person.givenNameJosé Martins
person.identifier.ciencia-id8B19-FB72-4CE1
person.identifier.ciencia-idA219-6949-7254
person.identifier.orcid0000-0002-2546-1511
person.identifier.orcid0000-0002-9740-935X
person.identifier.orcid0000-0002-9345-2537
person.identifier.ridA-8599-2011
person.identifier.scopus-author-id12795023500
person.identifier.scopus-author-id8782621900
relation.isAuthorOfPublication1c1fd858-f78e-4286-97d0-9785e27faeee
relation.isAuthorOfPublication26c22f94-68f4-426d-a6e7-110ea47cdeee
relation.isAuthorOfPublicationac2e5b00-7316-4695-ba89-6d4d31171882
relation.isAuthorOfPublication.latestForDiscovery1c1fd858-f78e-4286-97d0-9785e27faeee

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