Residues in fingerprints hold clues to their age

Paige Hinners, Madison Thomas and Young-Jin Lee recently published Determining Fingerprint Age with Mass Spectrometry Imaging via Ozonolysis of Triacylglycerols
Analytical Chemistry

Levels of an unsaturated triacylglycerol decline in fingerprints from an individual from day 0 (top) to day 1 (middle) and day 3 (bottom).Police have long relied on the unique whorls, loops or arches encoded in fingerprints to identify suspects. However, they have no way to tell how long ago those prints were left behind — information that could be crucial to a case. A preliminary new study in ACS’ Analytical Chemistry suggests that could change. Researchers report that they could link compounds contained in fingerprints with their age.   

Read the full ACS press release here.