The effect of moderate temperatures on latent fingerprint chemistry

Simple item page
dc.contributor.authorJohnston, Andrew
dc.contributor.authorRogers, Keith
dc.date.accessioned2017-07-25T09:49:00Z
dc.date.available2017-07-25T09:49:00Z
dc.date.issued2017-03-14
dc.description.abstractThe effect of moderate temperatures (25–75 ℃) on latent fingerprints over a five-hour period was examined using Fourier transform infrared (FT-IR) microspectroscopy. The aim of the study was to detect changes in IR spectra due to any changes in fingerprint chemistry; these results were then compared to pure compounds found in sebum that was subjected to 75 ℃ for 5 h. Latent fingerprints deposited on CaF2 microscope slides and placed on a Peltier pump heating stage showed that higher temperatures significantly reduced the quantity of sebaceous compounds after 5 h, whereas temperatures below 45 ℃ had little effect on the quantity of these compounds over the same time period. Fourier transform infrared microspectroscopy allowed for the real-time detection of changes to the IR spectra and demonstrated an increase in the OH stretch band (3250 cm–1) over 5 h at all temperatures investigated, suggesting various oxidation processes were taking place. Pure samples analyzed included squalene, fatty acids, wax esters, and mixed triglycerides. Unsaturated lipids showed a similar increase in the OH stretch band to the latent fingerprints whereas saturated compounds showed no change over time. This information is required to better understand the effect of moderate temperatures on latent fingerprints and how these temperatures could affect aged print composition.en_UK
dc.identifier.citationJohnston A, Rogers K. (2017) The effect of moderate temperatures on latent fingerprint chemistry. Applied Spectroscopy, Volume 71, Issue 9, September 2017, pp. 2102-2110en_UK
dc.identifier.urihttps://doi.org/10.1177/0003702817694902
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/12231
dc.publisherSageen_UK
dc.rightsAttribution-NonCommercial 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.titleThe effect of moderate temperatures on latent fingerprint chemistryen_UK
dc.typeArticleen_UK

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
latent_fingerprint_chemistry-2017.pdf
Size:
703.81 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.79 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Staff publications (CDS)