论文部分内容阅读
本文用凯氏定氮法测定硝化纤维素中的氮含量。采用水杨酸、硫代硫酸钠和硫酸钾为催化剂,并将文献中的微量分析改为半微量分析,操作简便,数据准确,重现性好,测定的硝化纤维素中的氮含量与理论值很接近。
In this paper, Kjeldahl determination of nitrogen content in nitrocellulose. Using salicylic acid, sodium thiosulfate and potassium sulfate as catalyst, and changing the trace analysis in the literature to semi-trace analysis, the invention has the advantages of simple operation, accurate data and good reproducibility. The nitrogen content in the measured nitrocellulose is in good agreement with the theoretical The value is very close.