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Dating Bloodstains with Fluorescence Lifetime Measurements
Author(s) -
Guo Kevin,
Achilefu Samuel,
Berezin Mikhail Y.
Publication year - 2012
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201102935
Subject(s) - st louis , medicine , library science , medical school , citation , nuclear medicine , classics , art history , art , computer science , medical education
Age of bloodstains : Determining the age of a bloodstain at a crime scene is one of the greatest and oldest challenges in forensic science. The results presented herein, with dog blood as a model, indicate a highly reproducible correlation between the fluorescence lifetime and the age of the bloodstain (see figure). The time‐dependent changes in fluorescence lifetime were attributed to the alteration of tryptophan.