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Thorium chelate of β-SNADNS-6 in the paper chromatography of some anions

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Summary

The suitability of some developing solvent mixtures has been investigated for the paper-chromatographic separation of the anions fluoride, sulphate, phosphate, oxalate, citrate, selenate and molybdate, which form complexes with metals like thorium, zirconium etc. The solvent mixture acetone-ethanol-n-butanol-water-ammonia (40∶20∶10∶30∶2) proved effective in the separation of fluoride, sulphate, phosphate and selenate from a mixture. The blue thorium chelate of the dye β-SNADNS-6 has been used as a chromogenic spray for the detection of the anions on the paper, prominent pink spots appearing on a blue back ground. As little as 2 μg of fluoride, 10 μg of sulphate and phosphate, 15 μg oxalate and 25 μg of citrate, selenate and molybdate can be detected.

Zusammenfassung

Zur papierchromatographischen Trennung von Fluorid, Sulfat, Phosphat, Oxalat, Citrat, Selenat und Molybdat (die mit Thorium, Zirkonium u. a. Komplexe bilden) wurden verschiedene Lösungsmittelgemische geprüft. Das Gemisch Aceton-Äthanol-n-Butanol-Wasser-Ammoniak (40∶20∶10∶30∶2) hat sich bei der Trennung von Fluorid, Sulfat, Phosphat und Selenat bewährt. Die Chromatogramme wurden mit einer Lösung des Thoriumkomplexes von β-SNADNS-6 besprüht, wobei sich rosa Flecke auf blauem Untergrund entwickeln. Noch. 2 μg Fluorid, 10 μg Sulfat und Phosphat, 15 μg Oxalat, sowie 25 μg Citrat, Selenat und Molybdat konnten nachgewiesen werden.

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Authors and Affiliations

  1. Chemical Laboratories, Victoria (Government) College, Cooch Behar, India

    Sachindra Kumar Datta

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  1. Sachindra Kumar Datta
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Datta, S.K. Thorium chelate of β-SNADNS-6 in the paper chromatography of some anions. Z. Anal. Chem. 199, 19–23 (1964). https://doi.org/10.1007/BF00478181

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  • DOI: https://doi.org/10.1007/BF00478181

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