环境监测管理与技术
環境鑑測管理與技術
배경감측관리여기술
THE ADMINISTRATION AND TECHNIQUE OF ENVIRONMENTAL MONITORING
2014年
2期
52-55
,共4页
刘涛%樊强%王帅斌%卢兴东%田文
劉濤%樊彊%王帥斌%盧興東%田文
류도%번강%왕수빈%로흥동%전문
甲醇%气体标准样品%均匀性分析%稳定性分析%定值%不确定度分析
甲醇%氣體標準樣品%均勻性分析%穩定性分析%定值%不確定度分析
갑순%기체표준양품%균균성분석%은정성분석%정치%불학정도분석
Methanol%Standard gas%Homogeneity analysis%Stability analysis%Certified value%Uncertain-ty analysis
介绍了甲醇气体标准样品的制备和定值方法，考察采用重量法制备氮气中甲醇标准气体样品的重现性、标准气体的均匀性和稳定性。试验表明，甲醇气体标准样品在气瓶内均匀性良好，在12个月研制期间没有不稳定趋势。摩尔分数为149．2×10-6甲醇气体标准样品，扩展不确定度为3％，能够满足环境污染源废气中甲醇气体监测的要求。
介紹瞭甲醇氣體標準樣品的製備和定值方法，攷察採用重量法製備氮氣中甲醇標準氣體樣品的重現性、標準氣體的均勻性和穩定性。試驗錶明，甲醇氣體標準樣品在氣瓶內均勻性良好，在12箇月研製期間沒有不穩定趨勢。摩爾分數為149．2×10-6甲醇氣體標準樣品，擴展不確定度為3％，能夠滿足環境汙染源廢氣中甲醇氣體鑑測的要求。
개소료갑순기체표준양품적제비화정치방법，고찰채용중량법제비담기중갑순표준기체양품적중현성、표준기체적균균성화은정성。시험표명，갑순기체표준양품재기병내균균성량호，재12개월연제기간몰유불은정추세。마이분수위149．2×10-6갑순기체표준양품，확전불학정도위3％，능구만족배경오염원폐기중갑순기체감측적요구。
A methodology for developing the CRM of methanol in nitrogen was described in the paper.The reproducibly of the preparing method,the homogeneity and long-term stability of methanol standard gas were eval-uated.The results indicated that standard gas was homogeneous and there are no systematic changes in concen-trations of methanol in nitrogen were detected during 12 months monitoring period.The expand uncertainty is 3%at the mole fraction of 149.2 ×10 -6 for methanol in nitrogen.The CRMwas intended for use in methanol monito-ring of environment stationary source emission.
