Determination of sulphur species in solidified cryolite melts
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Marta Ambrová
,
Jana Jurišová
Abstract
Solidified cryolite melts containing a known amount of Na2SO4 (0–713 mg kg−1 SO42−), Na2S, FeS, and CdS (0–400 mg kg−1 S2−) together with industrial electrolyte samples were tested for the content of sulphate and sulphide ions by ion chromatography. Added and analytically determined contents of sulphate and sulphide were compared and processed by means of linear regression analysis. It was found that the method of ion chromatography yields satisfying results (uncertainty below 1.1 %) and that it is especially suitable for the determination of low content of soluble sulphate or sulphide in solidified cryolite electrolytes. The method can be used for the estimation of insoluble sulphide content in cryolite melts as well. Results of industrial samples analysis showed that the content of sulphate and sulphide in the samples is influenced by their treatment before the analysis.
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© 2012 Institute of Chemistry, Slovak Academy of Sciences
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Articles in the same Issue
- Determination of sulphur species in solidified cryolite melts
- Separation of alicyclic and aromatic hydrocarbons on a PLOT column coated with 3-benzylketoiminepropyl group
- Analysis and improvement of stability of pepsin-solubilized collagen from skin of carp (Cyprinus carpio)
- Effects of elicitors on the enhancement of asiaticoside biosynthesis in cell cultures of centella (Centella asiatica L. Urban)
- Increase of biogas production from pretreated hay and leaves using wood-rotting fungi
- Neural network model predictive control of a styrene polymerization plant: online testing using an electronic worksheet
- Influence of purine on copper behavior in neutral and alkaline sulfate solutions
- A parametric study on coal gasification for the production of syngas
- Tungstate sulfuric acid: preparation, characterization, and application in catalytic synthesis of novel benzimidazoles
- Synthesis of conjugated (E,E)-1,3-diene-containing troponoid-based compounds
- Reaction of aniline with ammonium persulphate and concentrated hydrochloric acid: Experimental and DFT studies
- Erratum to: “Zakaria Salmi, Sarra Gam-Derouich, Samia Mahouche-Chergui, Mireille Turmine, Mohamed M. Chehimi: On the interfacial chemistry of aryl diazonium compounds in polymer science”
