Estimation of Nitrogen by Kjeldahl Method | Plants
In this article we will discuss about the Kjeldahl method for the estimation of nitrogen in plants. Principle: Digestion of nitrogenous compounds by concentrated sulphuric acid in presence of catalysts (reduced iron powder, and a mixture of CuSO4 and K2SO4) produces ammonium compound. Further, such ammonium compound when distilled by steam in presence of strong alkali (40% NaOH soln.) produces [...]