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First-Order Multivariate Calibration Applied to the Simultaneous Fluorometric Determination of the Anticancer Agents CPT-11 and SN-38 in Serum and Urine Samples

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Abstract

The first-order multivariate calibration method was used for the simultaneous determination of the camptothecin derivative, CPT-11 and its main metabolite, SN-38. The method is based on the fluorescence emission of these compounds in acidic media (acetate buffer, pH 4.75) and in the presence of ethanol (50%). The experimental calibration matrix was constructed with 12 samples using a central composite design. The cross-validation method was used for selecting the optimum number of factors. The results showed that simultaneous determination could be performed in the range 0.08 - 1.50 and 0.10 - 0.40 μg mL–1 for CPT-11 and SN-38, respectively. The method was successfully applied to the simultaneous determination of both analytes in human urine and in serum samples previously extracted with chloroform.

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Authors and Affiliations

  1. Department of Analytical Chemistry, University of Extremadura, 06006, Badajoz, Spain

    Isabel Durán Martín-Merás, María Isabel Rodríguez-Cáceres & María del Carmen Hurtado-Sánchez

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  1. Isabel Durán Martín-Merás
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  2. María Isabel Rodríguez-Cáceres
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  3. María del Carmen Hurtado-Sánchez
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Correspondence to Isabel Durán Martín-Merás.

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Martín-Merás, I.D., Rodríguez-Cáceres, M.I. & Hurtado-Sánchez, M. First-Order Multivariate Calibration Applied to the Simultaneous Fluorometric Determination of the Anticancer Agents CPT-11 and SN-38 in Serum and Urine Samples. ANAL. SCI. 27, 745–749 (2011). https://doi.org/10.2116/analsci.27.745

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  • DOI: https://doi.org/10.2116/analsci.27.745

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