Infrared microscopy studies of the chemical composition of latent fingermark residues
Synchrotron-infrared microscopy provides a non-destructive technique to investigate the chemical composition of latent fingermarks in-situ. The high spatial resolution and brightness of the synchrotron source also lends itself to the chemical characterisation of trace amounts of material on surfaces...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/21063 |
| _version_ | 1848750486021210112 |
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| author | Fritz, Patrick Van Bronswijk, Wilhelm Lepkova, Katerina Lewis, Simon Lim, K. Martin, D. Puskar, L. |
| author_facet | Fritz, Patrick Van Bronswijk, Wilhelm Lepkova, Katerina Lewis, Simon Lim, K. Martin, D. Puskar, L. |
| author_sort | Fritz, Patrick |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Synchrotron-infrared microscopy provides a non-destructive technique to investigate the chemical composition of latent fingermarks in-situ. The high spatial resolution and brightness of the synchrotron source also lends itself to the chemical characterisation of trace amounts of material on surfaces. However, only the lipid fraction of fingermark deposits is targeted when transmission-reflection is used. The fingermark lipid residues appeared to be relatively homogenous in composition across the deposit for any particular donor. No significant variation in the lipid composition as a function of age or gender of the donor was observed.Investigations into fingermark degradation were carried out by collecting spectra from fingermarks at three month intervals. An overall decrease in signal intensity was observed, ascribed to evaporation of the fingermark deposit. Greatest loss of material appeared to occur during the first 3 months following deposition. However, no significant variation in lipid composition was detected over a 9-month period.The outcomes of this study indicate that latent fingermark visualisation reagents that target lipids should produce accurate and reliable renditions of fingermarks irrespective of the age or gender of the donor, albeit with reduced sensitivity as the fingermark ages. |
| first_indexed | 2025-11-14T07:37:35Z |
| format | Journal Article |
| id | curtin-20.500.11937-21063 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:37:35Z |
| publishDate | 2013 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-210632019-02-19T04:27:50Z Infrared microscopy studies of the chemical composition of latent fingermark residues Fritz, Patrick Van Bronswijk, Wilhelm Lepkova, Katerina Lewis, Simon Lim, K. Martin, D. Puskar, L. Synchrotron-infrared microscopy provides a non-destructive technique to investigate the chemical composition of latent fingermarks in-situ. The high spatial resolution and brightness of the synchrotron source also lends itself to the chemical characterisation of trace amounts of material on surfaces. However, only the lipid fraction of fingermark deposits is targeted when transmission-reflection is used. The fingermark lipid residues appeared to be relatively homogenous in composition across the deposit for any particular donor. No significant variation in the lipid composition as a function of age or gender of the donor was observed.Investigations into fingermark degradation were carried out by collecting spectra from fingermarks at three month intervals. An overall decrease in signal intensity was observed, ascribed to evaporation of the fingermark deposit. Greatest loss of material appeared to occur during the first 3 months following deposition. However, no significant variation in lipid composition was detected over a 9-month period.The outcomes of this study indicate that latent fingermark visualisation reagents that target lipids should produce accurate and reliable renditions of fingermarks irrespective of the age or gender of the donor, albeit with reduced sensitivity as the fingermark ages. 2013 Journal Article http://hdl.handle.net/20.500.11937/21063 10.1016/j.microc.2012.08.005 Elsevier fulltext |
| spellingShingle | Fritz, Patrick Van Bronswijk, Wilhelm Lepkova, Katerina Lewis, Simon Lim, K. Martin, D. Puskar, L. Infrared microscopy studies of the chemical composition of latent fingermark residues |
| title | Infrared microscopy studies of the chemical composition of latent fingermark residues |
| title_full | Infrared microscopy studies of the chemical composition of latent fingermark residues |
| title_fullStr | Infrared microscopy studies of the chemical composition of latent fingermark residues |
| title_full_unstemmed | Infrared microscopy studies of the chemical composition of latent fingermark residues |
| title_short | Infrared microscopy studies of the chemical composition of latent fingermark residues |
| title_sort | infrared microscopy studies of the chemical composition of latent fingermark residues |
| url | http://hdl.handle.net/20.500.11937/21063 |