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  • Title: [Flow injection analysis of trace amounts of doxycycline with inhibited chemiluminescence detection].
    Author: Li NB, Duan JP, Chen HQ, Chen GN.
    Journal: Guang Pu Xue Yu Guang Pu Fen Xi; 2004 Jan; 24(1):15-7. PubMed ID: 15768965.
    Abstract:
    A novel flow injection chemiluminescence method has been developed for the determination of doxycycline (DC) based on the inhibition of chemiluminescence reaction of Luminol-KMnO4 by using DC in sodium hydroxide medium. Using different concentrations of KMnO4, a series of good linear regression equations of decreased chemiluminescence intensity and the concentration of DC were obtained with different subsections in the concentration range of 0.005-5.0 microg x mL(-1). The detection limit (3sigma) is 2.0 x 10(-3) microg x mL(-1). The method has been successfully applied to the determination of DC in a pharmaceutical preparation.
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