原文由 jimzhu 发表:
RI=Rentation Index,保留指数。可用正构烷烃混合物来测定。RI可用手动计算或用一些软件自动来计算。如AMDIS等。
抱歉。应为RI=retention index。计算公式如下:
The Kovats index is used for the identification of single components
tra
log-----
trX
Lx=100*(y-X)*-------------+100*X
try
log------
trX
x = number of C-atoms of the lower hydrocarbon
y = number of C-atoms of the higher hydrocarbon
tra = retention time of the unknown component
trx = retention time of the lower component
try = retention time of the higher component