Application of atmospheric pressure microwave digestion to total Kjeldahl nitrogen determination in pharmaceutical, agricultural and food products

The kinetics of Kjeldahl's digestion for nitrogen determination was compared between microwave and classical heat- ing conditions. Various parameters (micr owave power, concentrations, time) of micr owave digestion were studied in order to define the optimal digestion conditions. Finall y, the Kjeldahl's analysis of nitr ogen using microwave digestion was applied to various pharmaceutical, agricultural and food products.