AUTOMATIC ELEMENTAL ANALYSIS FOR THE DETERMINATION OF NITROGEN AND PROTEIN – COMBUSTION ANALYSIS
While acid digestion according to Kjeldahl destroys the organic sample in a rather rustic way, combustion offers a more elegant and time-saving option. The sample is oxidised in a controlled manner and the resulting gaseous products are subjected to further analysis. The aim is the complete conversion of the sample into the main products carbon dioxide, water and nitrogen dioxide, without the by-products carbon monoxide CO and nitrogen monoxide NO resulting from incomplete combustion.