Investigations into sampling approaches for chemical analysis of latent fingermark residue
© 2019 Elsevier B.V. The quantitative variation in latent fingermark deposits sampled from the same donor (intra-donor) poses considerable challenges to studies into the chemical composition of latent fingermarks. The work presented here investigates approaches to the sampling of latent fingermark r...
| Main Authors: | , , |
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| Format: | Journal Article |
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2019
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| Online Access: | 10.26434/chemrxiv.7604663 http://hdl.handle.net/20.500.11937/76760 |
| _version_ | 1848763753531703296 |
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| author | Dorakumbura, Buddhika Busetti, F. Lewis, Simon |
| author_facet | Dorakumbura, Buddhika Busetti, F. Lewis, Simon |
| author_sort | Dorakumbura, Buddhika |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2019 Elsevier B.V. The quantitative variation in latent fingermark deposits sampled from the same donor (intra-donor) poses considerable challenges to studies into the chemical composition of latent fingermarks. The work presented here investigates approaches to the sampling of latent fingermark residues within this context. The amount of squalene in fingermarks deposited on non-porous surfaces, determined by GC–MS, was used as an indicator of the amount of non-polar material present. It was found that the percentage difference of squalene between deposits from two hands at a given time, without controlling the deposition force, was in the range of 4–100%. This was reduced to 0–44% in alternative sampling approaches where deposition force was controlled. These results demonstrate the significant influence of sampling on subsequent chemical analysis of fingermark residues, and offer possible sampling strategies to overcome issues associated with intra-donor variation. |
| first_indexed | 2025-11-14T11:08:28Z |
| format | Journal Article |
| id | curtin-20.500.11937-76760 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:08:28Z |
| publishDate | 2019 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-767602021-05-11T03:35:31Z Investigations into sampling approaches for chemical analysis of latent fingermark residue Dorakumbura, Buddhika Busetti, F. Lewis, Simon © 2019 Elsevier B.V. The quantitative variation in latent fingermark deposits sampled from the same donor (intra-donor) poses considerable challenges to studies into the chemical composition of latent fingermarks. The work presented here investigates approaches to the sampling of latent fingermark residues within this context. The amount of squalene in fingermarks deposited on non-porous surfaces, determined by GC–MS, was used as an indicator of the amount of non-polar material present. It was found that the percentage difference of squalene between deposits from two hands at a given time, without controlling the deposition force, was in the range of 4–100%. This was reduced to 0–44% in alternative sampling approaches where deposition force was controlled. These results demonstrate the significant influence of sampling on subsequent chemical analysis of fingermark residues, and offer possible sampling strategies to overcome issues associated with intra-donor variation. 2019 Journal Article http://hdl.handle.net/20.500.11937/76760 10.1016/j.forc.2019.100166 10.26434/chemrxiv.7604663 http://creativecommons.org/licenses/by-nc-nd/4.0/ fulltext |
| spellingShingle | Dorakumbura, Buddhika Busetti, F. Lewis, Simon Investigations into sampling approaches for chemical analysis of latent fingermark residue |
| title | Investigations into sampling approaches for chemical analysis of latent fingermark residue |
| title_full | Investigations into sampling approaches for chemical analysis of latent fingermark residue |
| title_fullStr | Investigations into sampling approaches for chemical analysis of latent fingermark residue |
| title_full_unstemmed | Investigations into sampling approaches for chemical analysis of latent fingermark residue |
| title_short | Investigations into sampling approaches for chemical analysis of latent fingermark residue |
| title_sort | investigations into sampling approaches for chemical analysis of latent fingermark residue |
| url | 10.26434/chemrxiv.7604663 http://hdl.handle.net/20.500.11937/76760 |