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Diurnal variations of abiotic parameters in a stream, recipient for drainage water in Ranstad, southwest Sweden
Örebro universitet, Institutionen för naturvetenskap.ORCID-id: 0000-0002-2674-4994
SWECO VBB VIAK, SE-61132 Nykoping, Sweden.
Örebro universitet, Institutionen för naturvetenskap.
2002 (Engelska)Ingår i: Journal of Environmental Monitoring, ISSN 1464-0325, E-ISSN 1464-0333, Vol. 4, nr 5, s. 772-777Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

During 24 h, water samples were taken for determination of a number of key parameters in a water system containing high concentrations of FeII at circumneutral pH. None of the major constituents (Ca, Mg, Na, K and sulfate) showed diurnal variations, while dissolved oxygen and pH increased during the night. This increase could entirely be explained by the decrease in water temperature. However, the concentration of FeII slightly increased at constant concentration of total Fe during the night, opposite to earlier observations in other systems where the presence of FeII was shown to be controlled by photoreduction. Nocturnal peaks of FeII have also been observed in other systems with high iron concentrations, however, at acidic pH, but without obvious explanation. The mechanisms for this process therefore need further investigation.

Ort, förlag, år, upplaga, sidor
Cambridge: Royal Society of Chemistry, 2002. Vol. 4, nr 5, s. 772-777
Nationell ämneskategori
Kemi Miljövetenskap
Forskningsämne
Miljövetenskap; Kemi
Identifikatorer
URN: urn:nbn:se:oru:diva-5192DOI: 10.1039/B201659AISI: 000178925800033OAI: oai:DiVA.org:oru-5192DiVA, id: diva2:158137
Tillgänglig från: 2009-01-30 Skapad: 2009-01-30 Senast uppdaterad: 2017-12-14Bibliografiskt granskad

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Bäckström, MattiasKarlsson, Stefan

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