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  • Title: Polarographic behaviour of Aceclofenac, Tenoxicam and Droxicam in a methanol-water mixture.
    Author: Acuña JA, Vázquez MD, Tascón ML, Sánchez-Batanero P.
    Journal: J Pharm Biomed Anal; 2004 Sep 21; 36(1):157-62. PubMed ID: 15351060.
    Abstract:
    A polarographic study about how three anti-inflammatories, such as Aceclofenac, Tenoxicam and Droxicam behave, using tast polarography (TP) and differential pulse polarography (DPP) was carried out. These studies were always carried out in a media formed by Methanol-Britton-Robinson aqueous buffer (0.1M) (4:96 (v/v)) due to the low solubility of these drugs in water. A strong influence of pH on analytical signals was observed, showing that the optimal pH values were between 4 and 5. Using DPP in the optimal experimental conditions, a detection limit of 10 ppb for Tenoxicam and Droxicam and 52 ppb for Aceclofenac was reached. The DPP proposed method was successfully applied to the determination of the active compounds in commercial drugs.
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