✦ LIBER ✦

Determination of theophylline by liquid chromatography with sensitized lanthanide luminescence detection

✍ Scribed by Averrin G. Mwalupindi; Isiah M. Warner

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 710 KB
Volume: 306
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(94)00670-h

No coin nor oath required. For personal study only.

✦ Synopsis

A highly selective micellar liquid chromatographic technique has been developed for the determination of theophylline. The detection scheme is based on an intermolecular energy transfer from theophylline to the Tb(III) counterions of the surfactant. The procedure involves direct injection of a sample containing theophylline in ethyl acetate onto a normal phase column using fluorescence detection. Determination is achieved by comparing peak heights of the analyte and standard samples of theophylline. The linear dynamic range of this technique is over two orders of magnitude and a detection limit down to 9 ng/ml has been achieved for theophylline.

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