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KMID : 0385520150280020125
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Analytical Science & Technology
2015 Volume.28 No. 2 p.125 ~ p.131
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Determination of terbutaline in human plasma by coupled column chromatography
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Ko Mi-Young
Jeon Sang-Seol
Kim Kyeong-Ho
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Abstract
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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.%.
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KEYWORD
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terbutaline, coupled column chromatography, HPLC, solid phase extraction, plasma,
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