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  • Title: Determination of the antibacterial trovafloxacin by differential-pulse adsorptive stripping voltammetry.
    Author: Vílchez JL, Taoufiki J, Araujo L, Navalón A.
    Journal: J Pharm Biomed Anal; 2003 Mar 10; 31(3):465-71. PubMed ID: 12615233.
    Abstract:
    A differential-pulse adsorptive stripping voltammetric method for the determination of trace amounts of the antibacterial trovafloxacin (TRFLX) is proposed. The optimal experimental parameters for the drug assay were: accumulation potential=-0.30 V (vs. Ag/AgCl), accumulation time=120 s, pulse amplitude=50 mV and scan rate=5 mV s(-1) in Britton-Robinson buffer (pH 4.5). The linear concentration range of application was 2.0-20.0 ng ml(-1) of TRFLX, with a relative standard deviation of 3.6% (for a level of 5.0 ng ml(-1)) and a detection limit of 0.6 ng ml(-1). The method was applied to determination of TRFLX in human urine and serum samples. It was validated using HPLC as a reference method. Recovery levels of the method reached 100% in all cases
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