New analytical methodology for analysing S(IV) species at low pH solutions by one-stage titration method (bichromatometry) with a clear colour change

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Santasalo-Aarnio, Annukka
dc.contributor.author Galfi, Istvan
dc.contributor.author Virtanen, Jorma
dc.contributor.author Gasik, Michael
dc.date.accessioned 2018-02-09T10:00:12Z
dc.date.available 2018-02-09T10:00:12Z
dc.date.issued 2017
dc.identifier.citation Santasalo-Aarnio , A , Galfi , I , Virtanen , J & Gasik , M 2017 , ' New analytical methodology for analysing S(IV) species at low pH solutions by one-stage titration method (bichromatometry) with a clear colour change ' PLoS One , vol 12 , no. 11 , e0188227 , pp. 1-15 . DOI: 10.1371/journal.pone.0188227 en
dc.identifier.issn 1932-6203
dc.identifier.other PURE UUID: 7c2a4bb4-3858-45f8-83c7-b92cf0778c8e
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/new-analytical-methodology-for-analysing-siv-species-at-low-ph-solutions-by-onestage-titration-method-bichromatometry-with-a-clear-colour-change(7c2a4bb4-3858-45f8-83c7-b92cf0778c8e).html
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/16284817/journal.pone.0188227.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/29877
dc.description.abstract A new, faster and more reliable analytical methodology for S(IV) species analysis at low pH solutions by bichromatometry is proposed. For decades the state of the art methodology has been iodometry that is still well justified method for neutral solutions, thus at low pH media possess various side reactions increasing inaccuracy. In contrast, the new methodology has no side reactions at low pH media, requires only one titration step and provides a clear color change if S(IV) species are present in the solution. The method is validated using model solutions with known concentrations and applied to analyses of gaseous SO2 from purged solution in low pH media samples. The results indicate that bichromatometry can accurately analyze SO2 from liquid samples having pH even below 0 relevant to metallurgical industrial processes. en
dc.format.extent 15
dc.format.extent 1-15
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries PLoS One en
dc.relation.ispartofseries Volume 12, issue 11 en
dc.rights openAccess en
dc.subject.other 116 Chemical sciences en
dc.title New analytical methodology for analysing S(IV) species at low pH solutions by one-stage titration method (bichromatometry) with a clear colour change en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Chemical and Metallurgical Engineering
dc.subject.keyword 116 Chemical sciences
dc.identifier.urn URN:NBN:fi:aalto-201802091373
dc.identifier.doi 10.1371/journal.pone.0188227
dc.type.version publishedVersion


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