| Autor: |
Welsch, T., Frank, H., Zwanziger, H., Liebisch, S., Engewald, W. |
| Zdroj: |
Chromatographia; January 1984, Vol. 19 Issue: 1 p457-461, 5p |
| Abstrakt: |
Summary: Using n-heptane as eluent a direct linear correlation was found between the logk’ values of various polar test compounds and the silanol content determined by the methyllithium method. The peak asymmetries pass through a maximum at a medium silanol content. Peak asymmetries and logk’ values depend also on the chain length of the bonded alkyl group. A computer program was used to classify 25 home-made RP materials, 7 commercial products and the starting silica to achieve a hierarchical classification of them. The arrangement provides some detailed information about the presence and the effect of silanol groups. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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