杜马斯燃烧法测定煤炭中氮含量

Determination of nitrogen content in coal by Dumas combustion method

采用杜马斯燃烧法,利用氮分析仪对煤炭中的氮含量进行测定。试样在一个分析周期中分为3个阶段:冲洗、燃烧和分析。结果表明,用杜马斯燃烧法测定煤炭中氮含量与传统湿法分析相比,操作方法简便容易掌握,快速分析的同时确保了准确性,符合工业生产与试验分析的要求。

The content of nitrogen in coal was determined by nitrogen analyzer using Dumas combustion method. The sample was divided into three stages in one analysis cycle: flushing,combustion and analysis. The results showed that compared with the traditional wet methods for the determination of nitrogen content in coal,the Dumas combustion method was simple and easy to operate,and the accuracy was ensured in rapid analysis,which could meet the requirements of industrial production and experimental analysis.