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  • Title: Determination of amobarbital and secobarbital in plasma samples using micellar liquid chromatography.
    Author: Quiñones-Torrelo C, Martín-Biosca Y, Sagrado S, Villanueva-Camañas RM, Medina-Hernández MJ.
    Journal: Biomed Chromatogr; 2000 Aug; 14(5):287-92. PubMed ID: 10960826.
    Abstract:
    A new liquid chromatographic procedure for the determination of amobarbital and secobarbital in plasma samples is proposed. The method uses a Spherisorb octadecylsilane ODS-2 C(18) analytical column, a guard column of similar characteristics and 0.04 M CTAB solution buffered at pH 7.5 containing 3% 1-propanol as micellar mobile phase. The UV detection was carried out at 250 nm. Butabarbital was used as internal standard. Plasma samples preparation only required adequate dilution with the mobile phase before injection into the chromatographic system. The limits of detection were 0.2 and 0.4 mg/L for amobarbital and secobarbital, respectively. The proposed method allows the determination of amobarbital and secobarbital in plasma at therapeutic levels.
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