低温与特气
低溫與特氣
저온여특기
Low Temperature and Specialty Gases
2015年
5期
32-37
,共6页
代伟娜%刘晓林%董云峰%韦桂欢%闫云%陈欢
代偉娜%劉曉林%董雲峰%韋桂歡%閆雲%陳歡
대위나%류효림%동운봉%위계환%염운%진환
氮气%二氧化碳%一氧化碳%气体标准物质%不确定度
氮氣%二氧化碳%一氧化碳%氣體標準物質%不確定度
담기%이양화탄%일양화탄%기체표준물질%불학정도
nitric%carbon dioxide%carbon monoxide%gas reference material%uncertainty
采用称量法研制了氦中氮气、二氧化碳和一氧化碳气体标准物质,并用气相色谱法对其进行了均匀性考察和稳定性评价,结果表明该气体标准物质均匀性、稳定性良好,定值准确,量值可靠。浓度范围为:氮气1%~20%、二氧化碳1%~20%、一氧化碳1%~20%,扩展不确定度1.5%(k=2),有效期为1 a,使用压力下限为0.5 MPa。
採用稱量法研製瞭氦中氮氣、二氧化碳和一氧化碳氣體標準物質,併用氣相色譜法對其進行瞭均勻性攷察和穩定性評價,結果錶明該氣體標準物質均勻性、穩定性良好,定值準確,量值可靠。濃度範圍為:氮氣1%~20%、二氧化碳1%~20%、一氧化碳1%~20%,擴展不確定度1.5%(k=2),有效期為1 a,使用壓力下限為0.5 MPa。
채용칭량법연제료양중담기、이양화탄화일양화탄기체표준물질,병용기상색보법대기진행료균균성고찰화은정성평개,결과표명해기체표준물질균균성、은정성량호,정치준학,량치가고。농도범위위:담기1%~20%、이양화탄1%~20%、일양화탄1%~20%,확전불학정도1.5%(k=2),유효기위1 a,사용압력하한위0.5 MPa。
The gas reference material of nitric , carbon dioxide and carbon monoxide in helium was prepared by weighing method, and gas chromatography was used to investigate its uniformity and stability .The results showed that the gas refer-ence material had good uniformity and stability .And the value was accurate and reliable.The concentration range was 1%~20%, the relative expanded uncertainty was 1.5%(k=2), the validity period was one year and the using pressure low-er limit was 0.5MPa.