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Identification of Sulfate Sources and Biogeochemical Processes in an Aquifer Affected by Peatland: Insights from Monitoring the Isotopic Composition of Groundwater Sulfate in Kampinos National Park, Poland

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cris.lastimport.scopus2024-02-12T20:51:01Z
dc.abstract.enTemporal and spatial variations of the concentration and the isotopic composition of groundwater sulfate in an unconfined sandy aquifer covered by peatland have been studied to better understand the sources and biogeochemical processes that affect sulfate distribution in shallow groundwater systems influenced by organic rich sediments. The groundwater monitoring was carried out for one year at hydrogeological station Pożary located within the protected zone of the Kampinos National Park. Sulfur (δ34SSO4) and oxygen (δ18OSO4) isotopic composition of dissolved sulfates were analyzed together with oxygen (δ18OH2O) and hydrogen (δ2HH2O) isotopic composition of water and major ions concentration at monthly intervals. The research revealed three main sources of sulfates dissolved in groundwater, namely, (a) atmospheric sulfates—supplied to the aquifer by atmospheric deposition (rain and snow melt), (b) sulfates formed by dissolution of evaporite sulfate minerals, mainly gypsum—considerably enriched in 34S and 18O, and (c) sulfate formed during oxidation of reduced inorganic sulfur compounds (RIS), mainly pyrite—depleted in 34S and 18O. The final isotopic composition and concentration of dissolved SO42− in groundwater are the result of overlapping processes of dissimilatory sulfate reduction, oxidation of sulfide minerals, and mixing of water in aquifer profile.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorHałas, Stanisław
dc.contributor.authorPorowski, Adam
dc.contributor.authorPorowska, Dorota
dc.date.accessioned2024-01-25T03:43:35Z
dc.date.available2024-01-25T03:43:35Z
dc.date.issued2019
dc.description.financeNie dotyczy
dc.description.volume11 (7)
dc.identifier.doi10.3390/W11071388
dc.identifier.issn2073-4441
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/108882
dc.identifier.weblinkhttps://doi.org/10.3390/w11071388
dc.languageeng
dc.pbn.affiliationearth and related environmental sciences
dc.relation.ispartofWater (Switzerland)
dc.relation.pages1388
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enoxygen isotopes
dc.subject.ensulfur isotopes
dc.subject.enisotopic composition of water
dc.subject.enbacterial sulfate reduction
dc.subject.ensulfide oxidation
dc.subject.enatmospheric sulfate
dc.subject.enpeatland
dc.subject.enunconfined aquifer
dc.subject.enmineralization of organic matter
dc.titleIdentification of Sulfate Sources and Biogeochemical Processes in an Aquifer Affected by Peatland: Insights from Monitoring the Isotopic Composition of Groundwater Sulfate in Kampinos National Park, Poland
dc.typeJournalArticle
dspace.entity.typePublication