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氯苯标准气体的研制
引用本文:李宁,郭健,樊强,王帅斌,王倩,田文.氯苯标准气体的研制[J].计量学报,2013,34(1):68-71.
作者姓名:李宁  郭健  樊强  王帅斌  王倩  田文
作者单位:环境保护部标准样品研究所, 北京 100029
摘    要:介绍了氮气中氯苯标准气体的研制方法。氯苯标准气体所采用制备方法为称量法,分析方法为GC-FID法。实验结果显示,氯苯标准气体具有良好的线性、瓶内均匀性和稳定性,有效期为12个月。研究制备的氯苯标准气体标准值为1~5μmol/mol,相对扩展不确定度为5%(置信度为95%),与美国Scott Specialty Gases的同类标准气体具有可比性。

关 键 词:计量学  标准气体  氯苯  均匀性  稳定性  不确定度  

Development of Gas Standard of Chlorobenzene
LI Ning,GUO Jian,FAN Qiang,WANG Shuai-bin,WANG Qian,TIAN Wen.Development of Gas Standard of Chlorobenzene[J].Acta Metrologica Sinica,2013,34(1):68-71.
Authors:LI Ning  GUO Jian  FAN Qiang  WANG Shuai-bin  WANG Qian  TIAN Wen
Affiliation:Institute for Environmental Reference Materials of Ministry of Environmental Protection, Beijing 100029, China
Abstract:The development method of a chlorobenzene gas standard are described.Chlorobenzene gas standard is prepared by gravimetric method and is intercompared to the existing gas cylinder standards using gas chromatography with a hydrogen flame ionization detector.The linear regression analysis show excellent agreement among the standards for chlorobenzene.As a result of with-in homogeneity,the data show that chlorobenzen are homogeneous in the cylinder,the long-term stability of the gas standard is as long as 12 months.The certified value of developed chlorobenzene gas standard is 1~5μmol/mol,and the relative expanded uncertainty is 5% at the 95% confidence interval for chorobenzene,it agree with the similar standard gas from Scott Specialty Gases.
Keywords:Metrology  Gas standard     Chlorobenzene  Homogeneity  Stability  Uncertainty  
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