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Chemical analysis of sulfur species in geothermal waters
Nordic Volcanological Center, University of Iceland, Institute of Earth Sciences.ORCID iD: 0000-0003-3382-1764
Institute of Earth Sciences, University of Iceland.
2011 (English)In: Talanta: The International Journal of Pure and Applied Analytical Chemistry, ISSN 0039-9140, E-ISSN 1873-3573, Vol. 85, no 4, p. 1897-1903Article in journal (Refereed) Published
Abstract [en]

Analytical methods have been developed to determine sulfur species concentrations in natural geothermal waters using Reagent-Free™ Ion Chromatography (RF™-IC), titrations and spectrophotometry. The sulfur species include SO 4 2-, S 2O 3 2-, and ∑S 2- with additional determination of SO 3 2- and S xO 6 2- that remains somewhat semiquantitative. The observed workable limits of detections were ≤0.5 μM depending on sample matrix and the analytical detection limits were 0.1 μM. Due to changes in sulfur species concentrations upon storage, on-site analyses of natural water samples were preferred. Alternatively, the samples may be stabilized on resin for later elution and analysis in the laboratory. The analytical method further allowed simultaneous determination of other anions including F -, Cl -, dissolved inorganic carbon (DIC) and NO 3 - without sample preservation or stabilization. The power of the newly developed methods relies in routine analysis of sulfur speciation of importance in natural waters using techniques and facilities available in most laboratories doing water sample analysis. The new methods were successfully applied for the determination of sulfur species concentrations in samples of natural and synthetic waters. © 2011 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2011. Vol. 85, no 4, p. 1897-1903
Keyword [sv]
Chemical analysis, Dissolved sulfur speciation, Geothermal fluids, Ion chromatography
National Category
Geochemistry
Research subject
Tillämpad geokemi
Identifiers
URN: urn:nbn:se:ltu:diva-3257DOI: 10.1016/j.talanta.2011.07.024PubMedID: 21872035Scopus ID: 80052153008Local ID: 110a3e8c-9515-4af7-ae05-584d76f9e1a5OAI: oai:DiVA.org:ltu-3257DiVA: diva2:976113
Note
Upprättat; 2011; 20160205 (hankas)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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