Influencing electroosmotic flow and selectivity in open tubular electrochromatography by tetrakis(pentafluorophenyl)porphyrin as capillary wall modifier

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F03%3A00007432" target="_blank" >RIV/60461373:22340/03:00007432 - isvavai.cz</a>

Alternative codes found

RIV/61388963:_____/03:57030067 RIV/67985823:_____/03:57030067

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Influencing electroosmotic flow and selectivity in open tubular electrochromatography by tetrakis(pentafluorophenyl)porphyrin as capillary wall modifier

Original language description

A physically adsorbed and covalently bonded prophyrin derivative, 5.10.15.20-tetrakis(pentafluorophenyl)porphyrin, H2TPFPP, has been used as a fused-silica capillary wall modifier in open tubular capillary electrochromatography (OT-CEC), and its influence on the electroosmotic flow (EOF) velocity and on the selectivity of TO-CEC separations of a set of model aromatic carobxylic acids has been tested. Whereas most of the coatings of this cattegory bring about an increase in selectivity with a concomitantslow down of the EOF,H2TPFPP/ coating, depending of pH of the background electrolyte used, resulted both in decreasing of EOF at pH 8,5 by 5% and in increasing of EOF by 10-43% at pH 6 and 5, respectively.The separation efficiency and the resolution of aromatic carboxylic acids separation in coated capillaries, namely in that one with covalent coating, were better than in the bure fused-silica capillary. The perspectives of H2TPFPP as calillary wall modifier are visualized in introducing

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CB - Analytical chemistry, separation

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2003

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Chromatography A

ISSN

0021-9673

e-ISSN

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Volume of the periodical

990

Issue of the periodical within the volume

990

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

111-119

UT code for WoS article

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EID of the result in the Scopus database

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