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  • All fields: artifacts
(33 results)



Display: 20

    • Page 19

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    • 13 community to display children’s work, bringing children’s artifacts from home to display at school, and sharing photographs outside the classroom (Feiler et al., 2008). In conjunction with the U.S. Department of Education’s (USDOE)...
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    • ii TABLE OF CONTENTS CHAPTER 1: INTRODUCTION................................................................................... 1 Methamphetamine and CNS effects............................................................................ 1 History...
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    • iii LIST OF FIGURES Figure 1: Synthethic routes to methamphetamine ........................................................................... 7 Figure 2: TIC Chromatograph of methamphetamine extract with septum artifacts .......... 10 Figure 3:...
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    • 10 CHAPTER THREE: RESULTS Gas Chromatography/Mass Spectrophotometry (GC/MS) GC analysis was performed on multiple samples (n=11), collected and analyzed from February to April 2009, produced very similar gas chromatograms as shown in Figures 2-3....
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    • 11 Figure 3: TIC chromatogram of methamphetamine extracts Septum Artifacts Methamphetamine DMS
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    • 21 CHAPTER FOUR: DISCUSSION AND CONCLUSIONS Methamphetamine Impurities The hypothesis, that a distinct pattern of impurities present in illicit methamphetamine specimens could be characterized by GC/MS, was supported during this research, despite...
    • Page 26

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    • 22 in methamphetamine synthesized by hydriodic acid/red phosphorous (Puthaviriyakorn, 2002). In addition, naphthalene (found around 232 m/z) was not detected in this study. GC/MS and Methamphetamine Artifacts Though the methamphetamine samples...
    • Page 27

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    • 23 methamphetamine, which, facilitates the elimination of an amine or the formation of amphetamine. Because injector temperature was above 200 ºC (Figure 12), chemical derivatization was not performed on the samples, and methamphetamine samples...
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    • 24 Future Directions To minimize the possibility of artifacts it is recommended that illicit methamphetamine samples should be derivatized using 4-carbethoxyhexafluorobutyryl chloride (CB), heptafluorobutyric anhydride (HFBA or...
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    • 25 CHAPTER FIVE: LITERATURE CITED A.C. Allen, Methamphetamine from Ephedrine I, Chloroephedrines and aziridines. J. Forensic Sci., 32 (1987) 953-962. C.F.R., 21 C.F.R. Part 111, (Retrieved March 21, 2009), Dietary Supplements Containing Ephedrine...

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