摘要
研究用重量法制备氮中多元标准混合气体,对其制备原理、制备装置、气体称量装置,制备过程以及组分气体纯度的分析方法进行了介绍。分析了重量法制备氮中多元标准混合气体定值不确定度的来源,其定值的扩展不确定度小于3％。
The preparation of multi-component calibration gases in nitrogen by gravimetric method was studied. The preparing principle, preparing equipment, gas weighing apparatus and the method for analyzing the gas purity were introduced. The source of the certification uncertainty of multi-component calibration gases in nitrogen was analyzed. The uncertainty is less than 3%.
出处
《化学分析计量》
CAS
2002年第5期1-3,6,共4页
Chemical Analysis And Meterage
关键词
制备
氮
多元标准混合气体
重量法
纯度
不确定度
分析
nitrogen, multi-component calibration gas, gravimetric method, purity, uncertainty
