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Determination of arsenic in organic compounds

Bestimmung von Arsen in organischen Verbindungen

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Summary

Methods are described for the determination of arsenic in organic compounds. Following oxygen flask combustion using a nichrome gauze arsenic is estimated either by titration of arsenic(III) with iodine or by titration of iodine liberated from iodide by arsenic(V). An alternative colorimetric procedure involving measuring the absorbance of molybdenum blue is used following open tube digestion in the absence of halogens or sealed tube digestion in the presence of halogens.

Zusammenfassung

Nach Verbrennung im Sauerstoffkolben mit einem Nickeldrahtnetz als Katalysator wird das Arsen entweder durch. Titration des As(III) mit Jod oder durch Titration des durch As(V) aus Jodid ausgeschiedenen Jods bestimmt. Ein anderes Verfahren beruht auf der kolorimetrischen Bestimmung von Methylenblau nach Verbrennung im offenen Rohr bei Abwesenheit von Halogenen oder im verschlossenen Rohr bei Anwesenheit von Halogenen.

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Authors and Affiliations

  1. Department of Chemistry, University of Otago, P. O. Box 56, Dunedin, New Zealand

    A. D. Campbell & Low Choong-Pak

Authors
  1. A. D. Campbell
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  2. Low Choong-Pak
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Campbell, A.D., Choong-Pak, L. Determination of arsenic in organic compounds. Mikrochim Acta 73, 139–145 (1980). https://doi.org/10.1007/BF01197242

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  • DOI: https://doi.org/10.1007/BF01197242

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