Journal
JOURNAL OF FORENSIC SCIENCES
Volume 51, Issue 1, Pages 57-63Publisher
BLACKWELL PUBLISHING
DOI: 10.1111/j.1556-4029.2005.00006.x
Keywords
forensic science; fingerprint; latent; XRF; X-ray fluorescence; micro-XRF; MXRF; imaging; spectroscopy
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Using micro-X-ray fluorescence (MXRF), a novel means of detecting fingerprints was examined in which the prints were imaged based on their elemental composition. MXRF is a nondestructive technique. Although this method requires a priori knowledge about the approximate location of a print, it offers a new and complementary means for detecting fingerprints that are also left pristine for further analysis (including potential DNA extraction) or archiving purposes. Sebaceous fingerprints and those made after perspiring were detected based on elements such as potassium and chlorine present in the print residue. Unique prints were also detected including those containing lotion, saliva, banana, or sunscreen. This proof-of-concept study demonstrates the potential for visualizing fingerprints by MXRF on surfaces that can be problematic using current methods.
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