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Gas-chromatographic determination of divalent sulphur compounds using the catalyzed iodine-azide reaction in non-aqueous media

Gas-chromatographische Bestimmung von Schwefel(II)-Verbindungen mit der katalysierten Iod-Azid-Reaktion in nichtwäßrigen Medien

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Summary

A new gas-chromatographic catalytic method is described for the determination of divalent sulphur compounds, which are soluble or insoluble in water, based on the iodine-azide reaction in non-aqueous solutions. An analytical column with molecular sieve 5A and thermal conductivity detector was used. The nitrogen produced in the catalyzed reaction was measured as amount directly proportional to the sulphur catalysator concentrations. The analysis was carried out in methanol, ethylene glycol, dimethylformamide, methylformamide, formamide and dimethylsulphoxide as well as in the mixture of these solvents. The method allows to determine microamounts of sodium sulphide, pyrrolidinedithiocarbamate, thiourea, dithiothreitol, cysteine, ergothioneine, glutathion and thioammeline. The time required for a single analysis does not exceed 3 min.

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Authors and Affiliations

  1. Institute of Fundamental Chemistry, Politechnika, PL-60-965, Poznań, Poland

    Wojciech Puacz

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  1. Wojciech Puacz
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Puacz, W. Gas-chromatographic determination of divalent sulphur compounds using the catalyzed iodine-azide reaction in non-aqueous media. Z. Anal. Chem. 329, 43–46 (1987). https://doi.org/10.1007/BF00487539

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  • DOI: https://doi.org/10.1007/BF00487539

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