Abstract
Simple and sensitive headspace gas-chromatographic (GC) analysis of urinary methanol using syringe equilibration method was developed. A glass syringe containing 30 μL of urine sample and 50 mg of glass wool was heated at 85°C for 20 minutes and the HS vapor equilibrated under normal pressure in the syringe was injected directly into the GC-FID, and the analysis was carried out successfully without contamination. Relative standard deviations of less than 5% were observed for 20 – 80 μg/mL methanol spiked urine samples. The quantitative detection limit for urinary methanol was 0.3 μg/mL.
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