New analytical methodology for analysing S(IV) species at low pH solutions by one stage titration method (bichromatometry) with a clear colour change. Could potentially replace the state-of-art-method iodometry at low pH analysis due higher accuracy

• Annukka Santasalo-Aarnio ,

  Roles Data curation, Investigation, Methodology, Validation, Writing – original draft, Writing – review & editing

  * E-mail: annukka.santasalo@aalto.fi

  Affiliation Department of Chemical and Metallurgical Engineering, School of Chemical Engineering, Aalto University, Aalto, Finland

  http://orcid.org/0000-0003-0077-966X

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• Istvan Galfi,

  Roles Methodology

  Affiliation Department of Chemical and Metallurgical Engineering, School of Chemical Engineering, Aalto University, Aalto, Finland

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• Jorma Virtanen,

  Roles Investigation

  Affiliation Department of Chemical and Metallurgical Engineering, School of Chemical Engineering, Aalto University, Aalto, Finland

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• Michael M. Gasik

  Roles Funding acquisition, Methodology, Supervision, Writing – review & editing

  Affiliation Department of Chemical and Metallurgical Engineering, School of Chemical Engineering, Aalto University, Aalto, Finland

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