期刊
JOURNAL OF SEPARATION SCIENCE
卷 33, 期 11, 页码 1529-1537出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.200900466
关键词
Coverage density; Residual silanols; Stationary-bonded phase; Surface characterization; Zeta potential
资金
- Foundation for Polish Science Professor's Subsidy Mistrz
- Ministry of Science and Higher Education (KBN, Warsaw, Poland) [N N204 136637]
- European Social Found
- Polish National Budget
- Kujawsko-pomorskie Voivodship Budget
A set of seven homemade octadecyl silica-based bonded phases was investigated. Their zeta potential data in methanol and ACN as well as in methanol water and ACN water solution were obtained using Zetasizer. The influence of both the coverage density of bonded ligands and the end-capping of the modified surface on these data was investigated. Presented results may give useful information about the accessibility of the residual silanols in different mobile phases during the chromatographic analysis. Those measurements may be useful to choose chemically bonded stationary phases for CEC. The results also confirm the phenomena of anion exclusion from the pores of stationary-bonded phase.
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