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Analysis Of Mass Fragmentation Patterns Using Dart-Ms And Gcms For Drugs Of Abuse, Teresa Anne O'Neill
Analysis Of Mass Fragmentation Patterns Using Dart-Ms And Gcms For Drugs Of Abuse, Teresa Anne O'Neill
Legacy Theses & Dissertations (2009 - 2024)
Drugs of abuse have been a major problem for law enforcement departments. The structures of the drugs, as well as the ever changing trends in abuse, make it difficult and time consuming to analyze using modern techniques such as GC-MS. DART-MS is a rapid technique that requires no pre-treatment or re-concentration to analyze a sample. Samples of amphetamines, cathinones and cannabinoids were analyzed using DART-MS and GC-MS in order to provide fragment patterns that would make it easier to identify an unknown drug. Using DART-MS, isomers can be differentiated as well as identified rapidly, which is an advantage over GC-MS. …
Uncovering Organosulfur Natural Products In The "Shy-Plant" Mimosa Pudica Via Direct Analysis In Real Time Mass Spectrometry : Volatiles Emission From Touch Sensitive Roots, Max Jacob Maron
Legacy Theses & Dissertations (2009 - 2024)
Mimosa pudica L. (Mimosaceae) is a small shrub endemic to South America, now pantropically distributed. M. pudica displays the properties of seismonasty where the leaves fold and stems droop in response to both touch, as well as nyctinasty, a type of circadian rhythm. It was previously reported that the principal component of the odor that is produced when M. pudica is uprooted is caused by CS2 and COS, both of which were detected by GC-MS. The present study has found that the roots emit a foul odor in response to direct root stimulation. Further, neither CS2 nor COS were observed …