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Chemical Imaging of Cyanoacrylate‐Fumed Fingerprints by Matrix‐assisted Laser Desorption/Ionization Mass Spectrometry Imaging ,
Author(s) -
O'Neill Kelly C.,
Hinners Paige,
Lee Young Jin
Publication year - 2018
Publication title -
journal of forensic sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.715
H-Index - 96
eISSN - 1556-4029
pISSN - 0022-1198
DOI - 10.1111/1556-4029.13773
Subject(s) - mass spectrometry , cyanoacrylate , chemistry , matrix assisted laser desorption/ionization , maldi imaging , desorption , fumed silica , mass spectrometry imaging , analytical chemistry (journal) , chromatography , organic chemistry , adhesive , layer (electronics) , adsorption
For new techniques to be incorporated into forensic science, they must be compatible with current practices. Here, cyanoacrylate fuming, a common development technique for latent fingerprints, is studied for its compatibility with matrix‐assisted laser desorption/ionization mass spectrometry ( MALDI ‐ MS ) for chemical imaging of latent fingerprints. Half of a fingerprint was fumed while the other half was not; then, the changes in chemical composition and signal intensity were compared with MALDI ‐ MS imaging. No evidence was found that fingerprint compounds are chemically altered by fuming or their signal intensities affected. The only exceptions were significant signal loss for quaternary ammonium compounds from hygiene products and moderate signal loss for tertiary amine compounds. This result is in striking contrast with the previous attempts by others, which is attributed to the difference in instrumentation.