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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Spectrophotometric determination of fluoxetine by batch and flow injection methods.

A rapid, simple, and accurate spectrophotometric method is presented for the determination of fluoxetine by batch and flow injection analysis methods. The method is based on fluoxetine competitive complexation reaction with phenolphthalein-beta-cyclodextrin ( PHP-beta-CD) inclusion complex. The increase in the absorbance of the solution at 554 nm by the addition of fluoxetine was measured. The formation constant for fluoxetin-beta-CD was calculated by non-linear least squares fitting. Fluoxetine can be determined in the range 7.0x10(-6)-2.4x10(-4) mol l(-1) and 5.0x10(-5)-1.0x10(-2) mol l(-1) by batch and flow methods, respectively. The limit of detection and limit of quantification were respectively 4.13x10(-6) mol l(-1) and 1.38x10(-5) mol l(-1) for batch and 2.46x10(-5) mol l(-1) and 8.22x10(-5) mol l(-1) for flow method. The sampling rate in flow injection analysis method was 80+/-5 samples h(-1). The method was applied to the determination of fluoxetine in pharmaceutical formulations and after addition to human urine samples.[1]


  1. Spectrophotometric determination of fluoxetine by batch and flow injection methods. Afkhami, A., Madrakian, T., Khalafi, L. Chem. Pharm. Bull. (2006) [Pubmed]
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