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Fast gravimetric micro carbon-hydrogen determination. Automation of the method

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Summary

The carbon-hydrogen determination made with the Coleman Model 33 Analyzer has been improved. Cooling of specially designed absorption tubes, combined with programmed weighing, and the use of helium as the sweep gas, result in the error being independent of time of weighing and weight of sample. This eliminates systematic errors and substantially facilitates the work of the analyst. The operation of the automated instrument is simple and the results are very accurate for both elements.

Zusammenfassung

Eine verbesserte Bestimmungsmethode für Kohlenstoff und Wasserstoff mit dem Coleman Model 33 Analyzer wurde entwickelt. Kühlung der speziell hergestellten Absorptionsröhrchen, sowie Programmierung der Wägung und Einsetzen von Helium als Spülgas bewirken völlige Unabhängigkeit von der Zeit der Wägung und dem Gewicht der Probe. Durch diese Faktoren werden systematische Fehler weitgehend beseitigt und die Arbeit des Analytikers erheblich erleichtert. Die Arbeit mit dem automatisierten Gerät ist einfach und die Meßergebnisse sind sehr genau sowohl für Kohlenstoff als für Wasserstoff.

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Authors and Affiliations

  1. Microanalytical Department, Janssen Pharmaceutica, Beerse, Belgium

    F. Sels & P. Demoen

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  1. F. Sels
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  2. P. Demoen
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Sels, F., Demoen, P. Fast gravimetric micro carbon-hydrogen determination. Automation of the method. Microchim Acta 58, 516–529 (1970). https://doi.org/10.1007/BF01224155

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  • DOI: https://doi.org/10.1007/BF01224155

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