Pyrolysis DART-MS Analysis of Ignitable Liquids for Forensic and Environmental Applications
Pyrolysis DART-MS Analysis of Ignitable Liquids for Forensic and Environmental Applications
dc.contributor.author | Barnett, Isabella | |
dc.date.accessioned | 2019-08-07T18:54:29Z | |
dc.date.available | 2019-08-07T18:54:29Z | |
dc.date.issued | 2019-04-07 | |
dc.description.abstract | Conventional Gas Chromatography/Mass Spectrometry (GC/MS) methods for the analysis of ignitable liquids (ILs) are usually time-consuming and the data produced are difficult to interpret. A fast IL screening method using direct analysis in real time mass spectrometry (DART-MS) is proposed in this study. QuickStrip DART-MS and thermal desorption DART-MS methods were used to analyze neat ILs and thermal desorption DART-MS, without extraction, was used to analyze ILs on five substrates (e.g., carpet, wood, cloth, sand, and paper). Compared to GC/MS, DART-MS methods generated different spectral profiles for neat ILs with more peaks in the higher mass range and also provided better detection of less volatile compounds. ILs on substrates were successfully classified (98 ± 1%) using partial least squares discriminant analysis (PLS-DA) models based on thermal desorption DART-MS data. This study shows that DART-MS has great potential for the high throughput screening of ILs on substrates. | en_US |
dc.description.sponsorship | Funding was provided through a grant from MTSU Undergraduate Research Experience and Creative Activity (URECA). Special thanks to Dr. Mengliang Zhang and Dr. Frank Bailey for their support during this project. Dr. Ngee Sing Chong was acknowledged for the assistance of acquiring some ignitable liquid samples. I would like to acknowledge Ion- Sense, Inc. for the support and assistance on DART ion source and BioChromato, Inc. for offering IonRocket device for thermal desorption DART-MS experiments. | en_US |
dc.identifier.uri | http://jewlscholar.mtsu.edu/xmlui/handle/mtsu/6012 | |
dc.language.iso | en_US | en_US |
dc.publisher | University Honors College, Middle Tennessee State University | en_US |
dc.subject | DART-MS | en_US |
dc.subject | Chemometrics | en_US |
dc.subject | Forensic | en_US |
dc.subject | ignitable liquid | en_US |
dc.subject | classification | en_US |
dc.subject | substrates | en_US |
dc.title | Pyrolysis DART-MS Analysis of Ignitable Liquids for Forensic and Environmental Applications | en_US |
dc.type | Thesis | en_US |
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