浩瀚色谱（山东）应用技术开发有限公司测定了６１个不同类型化合物在６根ＰＥＧ２０Ｍ石英毛细管柱上的保留指数（ＲＩ），结果表明各柱间ＲＩ存在相当大的差异，给ＲＩ数据库的应用带来了困难，结合文献数据，从固定液本身、相界面吸附、热力学函数及柱极性的表征等方面探讨其原因，认为以烷烃为主的相界面吸附是影响ＲＩ可比性的重要因素，同时柱制备过程带来的影响也不容忽视。

　　名称:毛细管柱

　　型号:PEG-20M

　　规格:60m*0.32mm*0.5um

　　最高温度:240°C

　　编号:20230324001

　　Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. measured the retention index (RI) of 61 different types of compounds on 6 PEG20M quartz capillary columns. The results showed that there were significant differences in RI between columns, which caused difficulties in the application of RI database. Based on literature data, the reasons were discussed from the aspects of the stationary liquid itself, phase interface adsorption, thermodynamic function, and column polarity characterization, It is believed that the phase interface adsorption dominated by alkanes is an important factor affecting the comparability of RI, and the impact of the column preparation process cannot be ignored.

　　Name: Capillary Column

　　Model: PEG-20M

　　Specification: 60m * 0.32mm * 0.5um

　　Maximum temperature: 240 ° C

　　No.: 20230324001