by blogger klv
Fingerprints can reveal identity, but what else can be found? A research team at Purdue has developed a method to determine chemical composition of trace residues left in fingerprints. Lifted prints are analyzed by mass spectrometry and show more than just fingerprint patterns. The compounds found in the print can then be used to separate a print of interest from another overlying fingerprint.
|"The classic example of a fingerprint is an ink imprint showing the unique swirls and loops used for identification, but fingerprints also leave behind a unique distribution of molecular compounds," Cooks said. "Some of the residues left behind are from naturally occurring compounds in the skin and some are from other surfaces or materials a person has touched."|