A Study on the Determination of Total Nitrogen in Soils by Automatic Kjeldahl Nitrogen Analyzer

In order to enhance the accuracy of total nitrogen detection in soils, this paper optimizes the pretreatment process of the automatic Kjeldahl nitrogen analyzer method for determining total nitrogen by adjusting conditions such as digestion temperature, digestion time, distillation, and reagent selection. The optimal digestion temperature, digestion time, and distillation conditions are determined. Using this optimal method for soil total nitrogen detection significantly improves the accuracy and precision of the results.