Abstract
Abstract A high degree of association between known and unknown specimens of petrolatum-based lubricants, which occur as evidence in criminal sexual assault cases, can be demonstrated by using three-dimensional fluorescence spectroscopy (3-D fluorescence). Fifteen petrolatum-based products, five mock cases, and two cases provided by the Michigan State Police Crime Laboratory are analyzed and compared using this technique. Controls are run to eliminate interfering substances and to insure proper technique. Three-dimensional plots of excitation, emission, and synchronous excitation fluorescence spectra are collected. A computerized comparison of the resultant plots is conducted to determine if any differences occur between the plots. The results of these analyses suggest that this technique has great potential as an analytical tool, allowing the analyst to determine whether or not two petrolatum-based products could have a common source.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
