纸和纸板中有机氮含量的化学测定方法

Measuring method of organic nitrogen content in paper and paperboard

介绍纸和纸板中有机氮含量的化学测定原理与方法,此测定方法是微量克氏(Kjeldahl)定氮法的改进方法,参考了美国TAPPI标准的要求,用于测定纸和纸板中存在的胶、干酪素、脲或尿素、三聚氰胺甲醛树脂、胺和氨基聚合物以及其它含氮有机物质中的氮含量。

The paper introduces the principles and methods for chemical measurement of organonitrogen content in paper and paperboard -- the method is an improvement to Kjeldahl method. With reference to the requirement of TAPPI standard of US, it can be used to the measurement of nitrogen content in glue, casein, carbamide, urea, melamine formaldehyde resin, amine and amino polymernitrogen and other ni- trogenous organic substance.