Influence Of Organic Modifiers On The Retention Characteristics Of Graphitized Carbon Column
作者:
Marieta Balcan,
Tibor Cserháti,
Esther Forgács,
期刊:
Analytical Letters
(Taylor Available online 1997)
卷期:
Volume 30,
issue 4
页码: 883-893
ISSN:0003-2719
年代: 1997
DOI:10.1080/00032719708006431
出版商: Taylor & Francis Group
关键词: porous graphitized carbon column;nonionic surfactants;organic organic modifiers
数据来源: Taylor
摘要:
The retention time of α-(1,1,3,3-tetramethylbutyl)phenyl ethylene oxide oligomer surfactants was determined on a porous graphitized carbon column (PGC) in eluents containing acetonitrile, methanol, ethanol, 2-propanol, tetrahydrofuran, dioxane and 2-ethoxyethanol as organic modifier. Linear relationships were calculated between the logarithm of the capacity factor and the concentration of organic modifier in the eluent. Ethylene oxide oligomers were well separated on the PGC column in acetonitrile-water eluent mixtures. Oligomers were not separated in eluents containing 2-propanol, tetrahydrofuran. dioxane and 2-ethoxyethanol as organic modifier. This result was explained by the supposition that the bulky organic modifiers occupy the active adsorption centers on the PGC surface decreasing in this manner the separation efficiency of the support.
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