Abstract
A simple, rapid, and sensitive method for the analysis of halothane in biological samples was developed. The procedure describes the extraction of halothane from blood, liver, kidney, brain, urine, bile, and stomach contents by headspace solid-phase microextraction (HS-SPME) followed by capillary gas chromatography coupled with mass spectrometry (GC-MS). The recovery in blood samples after addition of ammonium sulfate and sulfuric acid was 72% compared to a sample prepared in water (100%). Linearity was established over a concentration range of 0.1-100 mg/kg of spiked blood samples with an excellent coefficient of correlation (0.996) and a limit of detection of 0.004 mg/kg. The time for analysis was approximately 40 min per sample including the extraction step. The procedure was used for quantitation of halothane in various samples in a case of a double homicide. HS-SPME in combination with GC-MS was an effective method for the determination and quantitation of halothane in biological material.
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