Sökning: onr:"swepub:oai:DiVA.org:uu-344214" >
Towards Fingermark ...
Towards Fingermark Dating : A Raman Spectroscopy Proof-of-Concept Study
-
- Andersson, Per Ola (författare)
- Uppsala universitet,Tillämpad materialvetenskap,FOI Swedish Def Res Agcy, CBRN Def & Secur, SE-90182 Umea, Sweden
-
- Lejon, Christian (författare)
- FOI Swedish Def Res Agcy, CBRN Def & Secur, SE-90182 Umea, Sweden.
-
- Mikaelsson, Therese (författare)
- Swedish Armed Forces, Natl CBRN Def Ctr, SE-90182 Umea, Sweden.
-
visa fler...
-
- Landstrom, Lars (författare)
- FOI Swedish Def Res Agcy, CBRN Def & Secur, SE-90182 Umea, Sweden.
-
visa färre...
-
(creator_code:org_t)
- 2017-10-18
- 2017
- Engelska.
-
Ingår i: ChemistryOpen. - : Wiley. - 2191-1363. ; 6:6, s. 706-709
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://uu.diva-port... (primary) (Raw object)
-
https://onlinelibrar...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Fingermarks have, for a long time, been vital in the forensic community for the identification of individuals, and a possibility to non-destructively date the fingermarks would of course be beneficial. Raman spectroscopy is, herein, evaluated for the purpose of estimating the age of fingermarks deposits. Well-resolved spectra were non-destructively acquired to reveal spectral uniqueness, resembling those of epidermis, and several molecular markers were identified that showed different decay kinetics: carotenoids > squalene > unsaturated fatty acids > proteins. The degradation rates were accelerated, less pronounced for proteins, when samples were stored under ambient light conditions, likely owing to photo-oxidation. It is hypothesized that fibrous proteins are present and that oxidation of amino acid side chains can be observed both through Raman and fluorescence spectroscopy. Clearly, Raman spectroscopy is a useful technique to non-destructively study the aging processes of fingermarks.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- aging
- fingermarks
- fluorescence spectroscopy
- forensics
- Raman spectroscopy
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas