Determining Fingerprint Age

March 16, 2020 — Researchers with Iowa State University in Ames, Iowa recently published a preliminary study that explores the possibility of linking compounds found in fingerprints with their age.

A press release from the journal where the study was published, Analytical Chemistry, states that determining the age of a fingerprint could help investigators narrow down the list of people who might have been present at the time a crime was committed.

"[P]ast research has shown that a gas chromatography-mass spectrometry method succeeded in determining if prints were more or less than eight days old; however, investigators often need more precision," said the press release. "To get a better idea of when prints were deposited, Young Jin Lee and colleagues looked to reactions already suspected to take place in these residues, when ozone in air reacts with unsaturated triacylglycerols left by a fingertip."

You can read the full press release here.

 
< Prev   Next >






Recovering Latent Fingerprints from Cadavers

IN A HOMICIDE CASE, the recovery of latent impressions from a body is just one more step that should be taken in the process of completing a thorough search. This article is directed at crime-scene technicians and the supervisors who support and direct evidence-recovery operations both in the field and in the controlled settings of the medical examiner’s office or the morgue under the coroner’s direction.

Read more...