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Direct coupling of supported liquid membrane extractions to capillary electrophoresis. Sensitivity enhancement in analyses of untreated complex samples

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    0438019 - ÚIACH 2015 RIV CZ eng C - Conference Paper (international conference)
    Pantůčková, Pavla - Kubáň, Pavel - Boček, Petr
    Direct coupling of supported liquid membrane extractions to capillary electrophoresis. Sensitivity enhancement in analyses of untreated complex samples.
    CECE 2014. 11th International Interdisciplinary Meeting on Bioanalysis. Brno: Institute of Analytical Chemistry AS CR, 2014 - (Foret, F.; Křenková, J.; Drobníková, I.; Guttman, A.; Klepárník, K.), s. 346-348. ISBN 978-80-904959-2-0.
    [CECE 2014. International Interdisciplinary Meeting on Bioanalysis /11./. Brno (CZ), 20.10.2014-22.10.2014]
    R&D Projects: GA ČR(CZ) GA13-05762S
    Institutional support: RVO:68081715
    Keywords : capillary electrophoresis * supported liquid membrane * transient isotachophoresis
    Subject RIV: CB - Analytical Chemistry, Separation
    http://www.ce-ce.org/CECE2014/CECE%202014%20proceedings_full.pdf

    Extractions across supported liquid membrane (SLM) were in-line coupled to capillary electrophoresis (CE) commercial system for direct injection of basic drugs from raw complex samples. A micro-extraction unit was inserted into the CE system sampling device and ensured excellent sample clean-up and injections directly from the membrane surface. Transient isotachophoresis (t-ITP) combined with large electrokinetic injections of selectively extracted basic analytes increased the sensitivity of the analytical method up to 300-fold when compared with conventional hydrodynamic injections and capillary zone electrophoresis (CZE) of the basic analytes.
    Permanent Link: http://hdl.handle.net/11104/0241518

     
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