Interaction of water-soluble vitamins with a new HPLC stationary phase based on zinc phthalocyanate

Autor:	S. M. Matusova, G. D. Brykina, Oleg A. Shpigun
Rok vydání:	2006
Předmět:	Sorbent Chemistry Inorganic chemistry technology industry and agriculture chemistry.chemical_element Zinc High-performance liquid chromatography Gibbs free energy symbols.namesake Adsorption Monolayer symbols Water-Soluble Vitamin Freundlich equation Physical and Theoretical Chemistry
Zdroj:	Russian Journal of Physical Chemistry. 80:1175-1177
ISSN:	1531-863X 0036-0244
DOI:	10.1134/s0036024406070338
Popis:	The adsorption of water-soluble vitamins on the surface of Diaspher-110-C18 sorbent modified with zinc octa-4,5-carboxyphthalocyanate is studied. Adsorption isotherms are constructed and calculated by the Glucauf method at 20°C. It is established that the shape of the isotherms depends on the nature of vitamins and their structure: the isotherm of vitamin C is a Henry-type isotherm, the isotherms of vitamins B3 and B6 are of S-type, and the isotherm of vitamin PP-amide is of L-type. Monolayer capacities, adsorption equilibrium constants, and Gibbs energy changes are calculated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e5bbbdb1967f2bd669e2d961a35aed6f https://doi.org/10.1134/s0036024406070338 Zobrazit plný text záznamu Full text from SpringerLink