期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1154, 期 1-2, 页码 138-151出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2007.03.119
关键词
RPLC stationary phase characterization; phenyl phases; principal component analysis
Twenty-one commercially available phenyl type RPLC packing materials have been characterized in terms of their surface coverage, hydrophobic selectivity, shape selectivity, hydrogen bonding capacity, ion exchange capacity at pH 2.7 and 7.6 and aromatic selectivity (i.e. pi-pi interaction). The phases have been compared to their corresponding C-alkyl phases, three pentafluorophenyl phases and a series of experimental phenyl phases of known bonding chemistry. Principal component analysis has been used to provide a graphical comparison of the differences and similarities between the phases. The phase's aromatic selectivity was found to be dependent on the length of the alkyl spacer between the silicon atom and the phenyl ring. (c) 2007 Elsevier B.v. All rights reserved.
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