Question

In Duma's method nitrogen is estimated as

Answer 1

The analysis of total nitrogen in an organic matrix can be carried out using the Dumas method (1831). This involves a total combustion of the matrix under oxygen. The gases produced are reduced by copper and then dried, while the CO2 is trapped.

Answer 2

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Duma's method-

this method is based upon the fact that the nitrogenous compound when heated with cupric oxide in a atmosphere of CO2 yield free nitrogen. Traces of oxides of nitrogen which may be formed in some cases,is reduces to elemental Nitrogen by passing over heated copper spiral.

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