重量法制备氮中微量氧气体标准物质  

PREPARATION OF MICRO-OXYGEN IN NITROGEN CALIBRATION GASES BY GRAVIMETRIC METHOD

作　　者：李春瑛[1] 张培壮[1] 韩桥[1] 张新[1] 吴海[1] 王德发[1] 章恭菲[1] 

机构地区：[1]中国计量科学研究院,北京100013

出　　处：《化学分析计量》2009年第1期4-7,共4页Chemical Analysis And Meterage

基　　金：中国计量科学研究院科技攻关项目(TZXM05-45)

摘　　要：介绍重量法制备氮中微量氧气体标准物质的实验方法和结果。考察了环境空气对微量氧配制过程中引入误差的影响,对称量法制备气体标准物质不确定度进行了评定并对不确定度进行了验证,验证结果吻合在1%之内;氧含量在0～10μmol/mol范围内重量法制备的气体标准物质的不确定度小于1%,并且取得了国际的等效性。The experiment method of preparing micro-oxygen in nitrogen calibration gases by gravimetric method was introduced.The influence of atmosphere during preparing micro-oxygen in nitrogen calibration gases was researched.The uncertainty of preparing reference gas by gravimetric method was evaluated,and the uncertainty of preparation was validated.The results was verified in line within 1%.The uncertainty result of gravimetric method for concentration ranging from 0 to 10 μmol/mol was no more than 1% as a resul...

关 键 词：氮中微量氧 标准气体 重量制备 

分 类 号：O659[理学—分析化学]