Celebrating Student Research

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Presented at the 66th Annual Scientific Meeting of the American Association of Forensic Science, 2014 in Seattle, WA.

Students: Theron Ng-A-Qui, B.S.; Bruce Eng, J.D.; Shu-Yuan Cheng, Ph.D.
Study: Extraction process efficiency study of cathinones by solid phase extraction

This study explored current limitations when dealing with synthetic drugs. Despite the increased availability of designer drugs, few studies have focused on the analytical extraction techniques for their detection and quantification in biological samples. With solid phase extraction (SPE) being the most commonly used technique for sample preparation, it is important to know the rate at which the target substances are being recovered. The results indicate that the Strata X Drug B SPE extraction was able to recover higher percentage of cathinone and mephedrone at medium (100 ng/ml) and high (500 ng/ml) concentrations, but not at low (10 ng/ml) concentration.

 

Presented ath the 2013 NEAFS Annual Meeting
September 25th – 28th, 2013, in Cromwell, CT

Student: Laura Pritchard
Study: Establishing a method to determine the Statistical Value of Fiber Evidence

Recent MS-FOS graduate Laura Pritchard presented her poster on "Establishing a method to determine the Statistical Value of Fiber Evidence". Dryer lint from 14 dryers was collected to show that each crime scene can be unique. A sample from each was mounted on its own microscope slide and then analyzed with a polarized light microscope. Color, cross sectional shape, parallel refractive index, perpendicular refractive index, dichroism, and birefringence of each fiber in the sample sets were captured and data were analyzed using Fisher’s Exact test. Her mentor for this project was Professor John Reffner.