title: Rapid determination of tramadol in human plasma by headspace solid-phase microextraction and capillary gas chromatography-mass spectrometry.
abstract: A simple, rapid and sensitive method for determination of tramadol in plasma samples was developed using headspace solid-phase microextraction (HS-SPME) and gas chromatography with mass spectrometry (GC-MS). The optimum conditions for the SPME procedure were: headspace extraction on a 65-microm polydimethylsiloxane/divinylbenzene (PDMS/DVB) fiber; 0.5 mL of plasma modified with 0.5 mL of sodium hydroxide (0.1 M); extraction temperature of 100 degrees C, with stirring at 2000 rpm for 30 min. The calibration curve showed linearity in the range of 1-400 ng mL(-1) with regression coefficient corresponding to 0.9986 and coefficient of the variation of the points of the calibration curve lower than 10%. The detection limit for tramadol in plasma was 0.2 ng mL(-1). The proposed method was successfully applied to determination of tramadol in human plasma samples from 10 healthy volunteers after a single oral administration.
authors.affiliation: Department of Pharmacy, Fudan University, Shanghai 200032, PR China.
authors.forename: Y F
authors.initials: YF
authors.lastname: Sha
authors.forename: S
authors.initials: S
authors.lastname: Shen
authors.forename: G L
authors.initials: GL
authors.lastname: Duan
mesh_terms: D019075:Electrophoresis, Capillary / Q000379:methods; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006801:Humans; D013997:Time Factors; D014147:Tramadol / Q000097:blood* / Q000737:chemistry*
chemical_list: D014147:Tramadol