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

NCJ Number
Analytical Chemistry Volume: 82 Issue: 20 Dated: 2010 Pages: 8427-8431
Date Published
5 pages

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.



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)

Date Published: January 1, 2010