DINDIAL-THESIS-2022.PDF (1.75 MB)
An Investigation into a Sprayable Application of Oil Red O for Fingerprint Analysis
thesis
posted on 2022-05-01, 00:00 authored by Ariana P DindialOil Red O (ORO) which has been historically used as an immersion solution in forensic science crime laboratories can be reformulated into a sprayable solution for more flexible use including at crime scenes.
The aim of this study was to replace the methanol in the original solution with a safer alternative for the sprayable technique, Isopropyl Alcohol. As well as use this formulation to develop a technique for utilizing the solution in a portable airbrush. Additionally, the sprayable formulation excluded Sodium Hydroxide, a strong base, to decrease the pH. Two different processing methods were tested on a random sample of fingerprints: the sprayable solution and the sprayable solution then subsequent processing with the traditional immersion Oil Red O technique. Samples were taken on a variety of porous substrates: copy paper, manila folder, and check paper that were then stored for between 2-6 hours to mimic a crime scene scenario or 1 week. Samples that were stored for 1 week were additionally subdivided and purged with nitrogen to remove oxygen, microbes, and bacteria in order to better preserve the quality of the print.
History
Advisor
Larsen, Albert KChair
Larsen, Albert KDepartment
Forensic ScienceDegree Grantor
University of Illinois at ChicagoDegree Level
- Masters
Degree name
MS, Master of ScienceCommittee Member
Steele, Charles Hall, Ashley Waller, Donald PSubmitted date
May 2022Thesis type
application/pdfLanguage
- en