CAJ | 학술논문

自制天然气中稀有气体纯化富集装置,并与四极杆质谱计联机使用,用于天然气中~4He丰度的分析.通过空气标准的反复多次分析,求得该分析系统~4He的灵敏度;同时验证了该系统具有较好的重现性.与Mat271大型质谱仪进行天然气样品分析的数据比对,结果基本一致,误差小于10%.应用该方法分析了四川盆地普光和建南气田部分天然气样品,结果表明,天然气中放射性成因的~4He丰度对天然气源岩时代和气藏形成的年代研究具有一定指示意义.
자제천연기중희유기체순화부집장치,병여사겁간질보계련궤사용,용우천연기중~4He봉도적분석.통과공기표준적반복다차분석,구득해분석계통~4He적령민도;동시험증료해계통구유교호적중현성.여Mat271대형질보의진행천연기양품분석적수거비대,결과기본일치,오차소우10%.응용해방법분석료사천분지보광화건남기전부분천연기양품,결과표명,천연기중방사성성인적~4He봉도대천연기원암시대화기장형성적년대연구구유일정지시의의.
A rare gas purification and accumulation system is designed and used in analysis of ~4He abundance in natural gas together with mass spectrograph. Sensitivity of ~4He is calculated. The system is proved reproductive. Data from natural gas analysis are compared with those from Mat271 mass spectrograph, and deviation is less than 10%. Natural gas from the Puguang and Jiannan gas fields in the Sichuan Basin is analyzed, indicating that, studies of ~4He abundance in natural gas is significant for age research of natural gas source rocks and accumulation formation.