Analysis of the Uncertainty of the Content of Nitrogen in Fertilizer with Capacity MethodGAI Wei, ZHANG Yu-juan, ZHAO Yan-hua, ZHANG Su-yanGAI Wei, ZHANG Yu-juan, ZHAO Yan-hua, ZHANG Su-yanAbstract:The main reasons of the uncertainty of the result for the content of nitrogen in fertilizer with distillation - titration by systemic analysis were introduced in this paper, the accurate calculation of the standard uncertainty and zxpanded uncertainty were carried out. In a word the affect on the uncertainty of the content of nitrogcn with capacity method was the volume change with the temperature change.[著者文摘]