GCMS的保留指数怎么做? 恩,我做的gcms报告上也有保留指数,这样还需不需要用正构烷烃来跑一次呢?... 你的报告上的保留指数,是数据库里的吗?你自己没有做的话,是不能直接引用的,除非你的条件和数据库的条件完全一致。否则还是自己跑一次吧。有专门的公式可以计算。definition of the retention indexrix = 100 n0 + 100 (rtx – rtn0) / (rtn1 – rtn0)with? ? ? ? x? ???the name of the target compoundn0? ? n-alkane cn0h2n0+2 directly eluting before xn1? ? n-alkane cn1h2n1+2 directly eluting after xrt? ? retention time (in any unit such as minutes, seconds, or scans)ri? ? retention index (pure number without unit)examples of retention indicesri(n-decane) = 1000ri(n-undecane) = 1100ri(x) = 1050, for any x that elutes exactly in the middle betweenn-decane and n-undecane, 查看更多