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DOI: 10.1039/A703798H (Paper) Reference Section for: Analyst, 1998, 123, 151-154

Room temperature phosphorescence optosensor for anthracyclines

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Fausto Alava-Moreno, María Jesús Valencia-González, María Jesús Valencia-González and Marta Elena Díaz-García

Abstract

A flow-through optosensor for anthracyclines based on the anthracycline–europium chelate room temperature phosphorescence energy transfer is proposed. The sensor was developed in conjunction with a flow injection analysis system and is based on the transient immobilization on a non-ionic resin (packed in a flow-through cell) of the anthracycline–europium chelate. The analytical performance characteristics of the proposed sensor for semi-automated analysis and control of very low levels of anthracycline were as follows: the detection limits for daunorubicin, doxorubicin and epirubicin were 9.0, 5.8 and 5.8 ng ml–1, respectively, with an RSD of 1% for the determination of 0.22 mg ml–1 of each anthracycline (n = 10). Most of the common metal ions in biological samples did not interfere, except FeIII, which caused serious interference and should be masked with 1,10-phenanthroline. The recommended method was successfully tested for determination of anthracyclines in clinical samples (urine and pharmaceutical preparations).

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