Investigations into the chromatographic behaviour of silica gels produced from ester silicates

Autor:	I. Schinke, G. Liebscher, G. Eppert
Rok vydání:	1989
Předmět:	Chromatography Chemistry Organic Chemistry Clinical Biochemistry Inorganic chemistry Biochemistry Chloride Analytical Chemistry chemistry.chemical_compound Adsorption Yield (chemistry) medicine Pyridinium medicine.drug
Zdroj:	Chromatographia. 28:9-14
ISSN:	1612-1112 0009-5893
DOI:	10.1007/bf02290374
Popis:	Silica gels produced from ester silicates (ES-gels) are excellent chromatographic supports. In comparison with other silica gels the RP-materials obtained from them show little peak tailing even with polar, and, in particular, with basic compounds. Gels produced by various manufacturing processes have been classified by adsorption with methyl pyridinium chloride. ES-gels yield very low methyl pyridinium chloride values and small asymmetry parameters. The results indicate that there are strongly acidic, structurally-related surface centres which cause peak tailing on most commercial gels. It was shown that surface silanols on silica gels do not, in themselves, lead to peak tailing.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::41ce7c02baab3c4c6a7e5adeb7bd99f1 https://doi.org/10.1007/bf02290374 Zobrazit plný text záznamu Full text from SpringerLink