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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

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    Determination of terbutaline in human plasma by coupled column chromatography

    Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
    2015, v.28 no.2, pp.125-131
    https://doi.org/10.5806/AST.2015.28.2.125



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    Abstract

    A method was developed and fully validated for the determination of terbutaline, a β2-receptor agonist, in human plasma. Plasma samples were prepared by solid-phase extraction with Sep-Pak silica, followed by high-performance liquid chromatography (HPLC). The terbutaline was pre-separated from the interfering components in plasma on a Luna C18 (2) column, and terbutaline and salbutamol as an internal standard were resolved and determined on a Luna Silica column. The two columns were connected by a switching valve equipped with silica pre-column. The pre-column was used to concentrate the terbutaline in the eluent from the C18 column before back-flushing onto the silica column with fluorescence detection at an excitation/emission wavelength of 276/306 nm. The method was shown to be specific by testing six different human plasma sources. Linearity was established for a concentration range of 0.4-20.0 ng/mL with a correlation coefficient of 0.9999. The lower limit of quantitation was 0.4 ng/mL with a precision of 10.1% as C.V.%.

    keywords
    terbutaline, coupled column chromatography, HPLC, solid phase extraction, plasma


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