浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司測(cè)定了６１個(gè)不同類型化合物在６根ＰＥＧ２０Ｍ石英毛細(xì)管柱上的保留指數(shù)（ＲＩ），結(jié)果表明各柱間ＲＩ存在相當(dāng)大的差異，給ＲＩ數(shù)據(jù)庫的應(yīng)用帶來了困難，結(jié)合文獻(xiàn)數(shù)據(jù)，從固定液本身、相界面吸附、熱力學(xué)函數(shù)及柱極性的表征等方面探討其原因，認(rèn)為以烷烴為主的相界面吸附是影響ＲＩ可比性的重要因素，同時(shí)柱制備過程帶來的影響也不容忽視。
名稱：毛細(xì)管柱
型號(hào)：PEG-20M
規(guī)格：60m*0.32mm*0.5um
最高溫度：240°C
編號(hào)：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
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