Počet záznamů: 1
Immobilization of a phosphonium ionic liquid on a silica monolith forhydrophilic interaction chromatography
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SYSNO ASEP 0490130 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Immobilization of a phosphonium ionic liquid on a silica monolith forhydrophilic interaction chromatography Tvůrce(i) Moravcová, Dana (UIACH-O) RID, ORCID
Planeta, Josef (UIACH-O) RID, ORCID
King, A. W. T. (FI)
Wiedmer, S. K. (FI)Celkový počet autorů 4 Zdroj.dok. Journal of Chromatography A. - : Elsevier - ISSN 0021-9673
Roč. 1552, JUN (2018), s. 53-59Poč.str. 7 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova silica monolithic capillary column ; HILIC ; nucleobase ; nucleoside Vědní obor RIV CB - Analytická chemie, separace Obor OECD Analytical chemistry CEP GA16-03749S GA ČR - Grantová agentura ČR VI20172020069 GA MV - Ministerstvo vnitra Institucionální podpora UIACH-O - RVO:68081715 UT WOS 000431939400006 EID SCOPUS 85045085429 DOI 10.1016/j.chroma.2018.04.012 Anotace A methodology for preparing phosphonium-based ionic liquid modified silica-based monolithic cap-illary columns is presented. The silica monolithic columns with dimensions of 150 × 0.1 mm weremodified by a phosphonium-based ionic liquid (trioctyl(3/4-vinylbenzyl)phosphonium chloride) via3-(trimethoxysilyl)propyl methacrylate. The prepared columns were evaluated under hydrophilic inter-action liquid chromatography separation conditions, employing a sample mixture containing purine andpyrimidine bases and nucleosides. Detection was made by UV. The high efficiency of the original silicamonolith was preserved even after modification, and it reached values in the range of 98,000–174,000theoretical plates/m. The effects of the concentration of acetonitrile in the mobile phase, the presence ofadditives in the mobile phase, such as, acetic acid or ammonium acetate, and the pH of the mobile phaseon the separation of some selected analytes were investigated. The prepared columns showed differentseparation selectivity compared to silica, phenyl and sulfobetaine stationary phases. Pracoviště Ústav analytické chemie Kontakt Iveta Drobníková, drobnikova@iach.cz, Tel.: 532 290 234 Rok sběru 2019
Počet záznamů: 1