Vollautomatische Anlage zur gleichzeitigen Bestimmung von Kohlenstoff, Wasserstoff und Stickstoff in organischen Verbindungen an Milligramm‐ und Submilligramm‐Mengen unter Verwendung einer selbstintegrierenden Wärmeleitfähigkeitsmessmethodik

Abstract

Abstract An analyser for the simultaneous determination of carbon, hydrogen and nitrogen in organic compounds is described. The samples are burned in a static system in oxygen and the combustion products are determined using a self‐integrating thermal conductivity method. Up to 16 previously weighed samples of 0.5 ÷ 2.0 mg are analysed without any manual help and the results are presented in digital form. One determination takes between 7 and 13 minutes. At present the standard error of a single determination is 0.20, 0.08 and 0.30% (absolute) for carbon, hydrogen and nitrogen, respectively, but these figures may easily be improved by minor modifications.