本国际标准描述了测量UO2、（U，Gd）O2和（U，Pu）O2颗粒中氮含量的程序。核燃料中的氮可能以元素氮的形式存在，也可能以含氮化合物的形式存在。本文所述技术用于测定氮的总含量，不包括分解温度高于2200°C的化合物（最显著的是Pu和U氮化物）。交叉引用:ISO/IEC指南98-3:2008GUM:1995包含以下内容:勘误表，2019年6月

This International Standard describes a procedure for measuring the nitrogen content of UO2, (U,Gd)O2, and (U,Pu)O2pellets. Nitrogen in nuclear fuel may be present either as elemental nitrogen or chemically combined in the form of nitrogenous compounds. The technique described herein serves to determine the total content of nitrogen excluding those compounds whose decomposition temperature is above 2 200 °C (most notably Pu and U nitrides).Cross References:ISO/IEC Guide 98-3:2008GUM:1995Incorporates the following:Corrigendum, June 2019