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Determination of trace amounts of phosphorus in organic compounds by wickbold combustion

Bestimmung von Phosphorspuren in organischen Verbindungen durch Wickbold-Verbrennung

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Summary

Wickbold combustion in a standard quartz apparatus with a suction burner is suitable for phosphorus determination in acetonesoluble materials if the samples are burned together with an organic halide, e. g. carbon tetrachloride. Probably phosphorus halides are formed which pass through the hot parts of the apparatus fast enough not to react with the quartz walls. The recovery is 95–100% for amounts of phosphorus up to 3.5 mg per combustion.

Zusammenfassung

Die Wickbold-Verbrennung in einer normalen Quarz-Apparatur mit Saugbrenner ist zur Phosphor-Bestimmung in acetonlöslichen Substanzen geeignet, wenn gleichzeitig mit den Proben eine organische Halogen-Verbindung, z. B. Tetrachlorkohlenstoff, verbrannt wird. Vermutlich werden dabei Phosphorhalogenide gebildet, die die heißen Zonen der Apparatur so schnell passieren, daß keine Reaktion mit den Quarzwänden stattfindet. Die Wiederfindungsrate für Phosphormengen bis 3,5 mg pro Verbrennung beträgt 95–100%.

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Friese, H.J. Determination of trace amounts of phosphorus in organic compounds by wickbold combustion. Mikrochim Acta 75, 265–269 (1981). https://doi.org/10.1007/BF01196396

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  • DOI: https://doi.org/10.1007/BF01196396

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