油田气中C_6—C_(11)烃类组分含量很低,加之这些组分的沸点高于常温,用普通注射器和六通气体阀进样往往因失真而不易测出。最近,我们进行了用液氮冷冻OV—101弹性石英毛细管柱直接从取样钢瓶收集气样的进样方式来测定C_6—C_(11)烃类组分的尝试。取得了较好的效果,出峰碳数达15,自异戊烷起各正构烷烃峰形对称,与其它组 Oil content of C_6-C_ (11) hydrocarbon components is very low, in addition to the boiling point of these components is higher than normal temperature, with a common syringe and six-way gas valve injection often due to distortion and not easy to measure. Recently, we performed an attempt to determine C 6 -C 11 hydrocarbon components by sampling the gas sample directly from a sample cylinder using liquid nitrogen-cooled OV-101 flexible silica capillary columns. Obtained good results, the peak carbon number of 15, since isopentane n-alkanes peak symmetry, and other groups