Multimode Imaging in the Thermal Infrared for Chemical Contrast Enhancement. Part 3: Visualizing Blood on Fabrics

• NCJ Number: 304196
• Journal: Analytical Chemistry Volume: 82 Issue: 20 Dated: 2010 Pages: 8427-8431
• Author(s): Heather Brooke; et al
• Date Published: 2010
• Length: 5 pages
• Grant Number(s): 2007-DN-BX-K199
• Agencies: NIJ-Sponsored
• Award: Rapid Visualization of Biological Fluids at Crime Scenes using Optical Spectroscopy

Annotation

The reported project involved Infrared thermal imaging, using lock-in and molecular factor computing methods for the detection of blood on a dark, acrylic fabric.

 

Abstract

It noted contrast differences between the clean fabric and the fabric stained with blood diluted as low as 1:100. It also demonstrated that this method can be used to discriminate between a bloodstain and four common interfering agents (bleach, rust, cherry soda, and coffee) to other blood detection methods. These results indicate that this system could be useful for crime-scene investigations by focusing nondestructive attention on areas more likely to be suitable for further analysis. (publisher abstract modified)