CHED 214 |
| Others have used gas chromatography/mass spectrometry to determine the concentration of a variety of chemicals in hair. In this project, a new method was developed to prepare hair samples to be analyzed by GC/MS for caffeine, nicotine, cotinine (a metabolite of nicotine), and Δ-9-tetrahydrocannabinol (the major active chemical in marijuana). This method includes the addition of dimethylformamide when concentrating the sample to a fixed volume. The amount of these chemicals in hair samples of volunteers was quantified by using 13C-labelled caffeine as an internal standard and by creating calibration curves for each chemical. |
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Undergraduate Research Poster Session: Analytical Chemistry
11:00 AM-1:00 PM, Monday, April 7, 2008 Morial Convention Center -- Hall A, Poster
Division of Chemical Education |