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A procedure for eliminating sulfide interference on silica colorimetric analysis

Published online by Cambridge University Press:  05 July 2018

Fernando Berro ,
Matteo Lelli ,
Ilaria Minardi  and
Giorgio Virgili
Fernando Berro*
Affiliation:
West Systems s.r.l., Via Don Mazzolari 25, I-56025, Pontedera (PI), Italy
Matteo Lelli
Affiliation:
CNR Institute of Geoscience and Earth Resources (CNR-IGG), Via Moruzzi 1, I-56124, Pisa, Italy
Ilaria Minardi
Affiliation:
West Systems s.r.l., Via Don Mazzolari 25, I-56025, Pontedera (PI), Italy
Giorgio Virgili
Affiliation:
West Systems s.r.l., Via Don Mazzolari 25, I-56025, Pontedera (PI), Italy
*
* E-mail: [email protected]
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Abstract

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Two different approaches were tested in this study to suppress sulfide interference in the silicomolybdate method of silica determination, namely: oxidation of sulfide to elemental sulfur; and conversion of the sulfide species to H2S and stripping by air bubbling. Based on the results obtained the latter approach is deemed to represent the better and quicker option to eliminate sulfide interference in silica colorimetric analysis.

Keywords

sulfide interferencecolorimetric analysissilica
Type
Research Article
Information
Mineralogical Magazine , Volume 78 , Issue 6 , November 2014 , pp. 1417 - 1422
Creative Commons
Creative Common License - CCCreative Common License - BY
© [2014] The Mineralogical Society of Great Britain and Ireland. This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY) licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2014

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