| NCJ Number: |
254402  |
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| Title: |
Characterization and Classification of Sexual Assault Lubricants using Direct Analysis in Real Time-Time of Flight Mass Spectrometry |
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| Document: |
PDF |
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| Author(s): |
Candice Bridge |
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| Date Published: |
November 2019 |
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| Annotation: |
This is the Final Summary Overview of a research project that sought to capitalize on the ease of use and the high mass resolution of the direct analysis in real time-high resolution mass spectrometry (DART-HRMS) instrument to design a rapid screening technique and a classification scheme for unknown lubricant samples. |
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| Abstract: |
This method was compared to current techniques such as gas chromatography-mass spectrometry (GC-MS) and Fourier transform infrared spectroscopy (FTIR). The classification schemes developed will be provided in the forensic lubricant database known as the Sexual Assault Lubricant Database. The project included the comprehensive examination of lubricant samples, so as to understand and identify similarities and differences among samples in creating classification schemes for unknown lubricant samples. This report summarizes analytical methods, data analysis, and the database design. The project succeeded in developing validated instrumental methods for analyzing lubricants of various bases (silicone-based, water-based, oil-based, edible, condom, and personal hygiene products), using each instrument. It determined which methods extract the most components, particularly for GC-MS, that will best discriminate samples. Many of the spectra for GC-MS did not produce any actual spectra, regardless of extraction method. DART-HRMS, however, was able to detect many of the components that GC-MS was not able to detect. FTIR was useful for determining the primarily lubricant base. Overall, this project has produced a new database and associated classification schemes that can be used in the analysis of unknown sexual lubricant samples collected in sexual assault cases. A listing of the project’s scholarly products is included.
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| Main Term(s): |
Forensic sciences |
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| Index Term(s): |
Databases; Evidence identification; Investigative techniques; National Institute of Justice (NIJ); NIJ final report; Rape investigations; Sex offense investigations; Sex offenses |
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| Grant Number: |
2016-NE-BX-0001 |
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| Sponsoring Agency: |
National Institute of Justice (NIJ)
Washington, DC 20531
University of Central Florida
Orlando, FL 32816
US Dept of Justice NIJ Pub
Washington, DC 20531 |
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| Corporate Author: |
University of Central Florida
United States of America |
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| Sale Source: |
US Dept of Justice NIJ Pub
810 Seventh Street, NW
Washington, DC 20531
United States of America |
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| Page Count: |
11 |
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| Format: |
Document; Document (Online) |
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| Type: |
Program/Project Description; Report (Grant Sponsored); Report (Study/Research); Report (Summary); Research (Applied/Empirical) |
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| Language: |
English |
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| Country: |
United States of America |
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To cite this abstract, use the following link:
http://www.ncjrs.gov/App/publications/abstract.aspx?ID=277646 |
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