Buchman O, Cao G Y, Peng C T
J Chromatogr. 1984 Nov 16;312:75-90. doi: 10.1016/s0021-9673(01)92765-7.
Substituents and functional groups cause increase in retention indexes of six-membered ring compounds on apolar and polar columns. These retention index increments (delta I) are characteristic and structure-dependent showing a structure-retention index relationship. The delta I values obtained for methyl and halogen atom substitution, cyclohexenes, and cyclohexanes are useful for predictive purpose in tritium labeling studies for tentative structure assignment of radioactive intermediates not amenable to analysis by conventional techniques.
取代基和官能团会导致六元环化合物在非极性和极性柱上的保留指数增加。这些保留指数增量（δI）具有特征性且依赖于结构，呈现出结构 - 保留指数关系。对于甲基和卤原子取代、环己烯以及环己烷所获得的δI值，在氚标记研究中对于那些无法用传统技术进行分析的放射性中间体的初步结构归属预测具有重要作用。
