Changes in the lipid composition of latent fingerprint residue with time after deposition on a surface

Archer, Nia; Charles, Yannis; Elliott, Julia A.; Jickells, Sue M.

doi:10.1016/j.forsciint.2004.09.120

Cited by 225 publications

(305 citation statements)

References 5 publications

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“…There is wide variation in the relative amounts of each fatty acid found in the latent fingerprint samples ( Figure 3). Hexadecanoic acid was the most abundant in all samples followed by octadecanoic acid and cis-9-octadecenoic acid, consistent with previously published data [13,15,27]. Quantitative differences were found between the 'natural' and 'groomed' fingerprint samples (Figure 3a).…”

Section: Fatty Acid Compositionsupporting

confidence: 90%

“…The lipid composition of latent fingerprints has been found to vary between individuals with age and gender [12,13,14]. Chemical changes that occur following deposition and environmental conditions are an important factor [15]. Unsaturated compounds such as squalene, oleic (cis-9-octadecenoic) and palmitoleic (cis-9-hexadecenoic) acids are predominantly lost over time, whilst saturated compounds essentially remain unchanged [13,15].…”

Section: Introductionmentioning

confidence: 99%

“…Chemical changes that occur following deposition and environmental conditions are an important factor [15]. Unsaturated compounds such as squalene, oleic (cis-9-octadecenoic) and palmitoleic (cis-9-hexadecenoic) acids are predominantly lost over time, whilst saturated compounds essentially remain unchanged [13,15]. Lower molecular weight compounds, such as short chain fatty acids appear in the fingerprint as it ages and are formed as unsaturated compound degradation products.…”

Section: Introductionmentioning

confidence: 99%

“…Lower molecular weight compounds, such as short chain fatty acids appear in the fingerprint as it ages and are formed as unsaturated compound degradation products. Degradation of squalene is more rapid in light conditions compared to dark [15]. Mountfort et al [16] identified squalene oxidation products in aged latent fingerprints including squalene monohydroperoxide and squalene epoxide and suggested that these and other oxidation products could be potential targets for novel visualisation reagents.…”

Section: Introductionmentioning

confidence: 99%

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Variation in amino acid and lipid composition of latent fingerprints

Croxton

Baron

Butler

et al. 2010

Forensic Science International

197

210

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The enhancement of latent fingerprints, both at the crime scene and in the laboratory using an array of chemical, physical and optical techniques, permits their use for identification. Despite the plethora of techniques available, there are occasions when latent fingerprints are not successfully enhanced. An understanding of latent fingerprint chemistry and behaviour will aid the improvement of current techniques and the development of novel ones. In this study the amino acid and fatty acid content of 'real' latent fingerprints collected on a non-porous surface was analysed by gas chromatography-mass spectrometry.Squalene was also quantified in addition. Hexadecanoic acid, octadecanoic acid and cis-9-octadecenoic acid were the most abundant fatty acids in all samples. There was, however, wide variation in the relative amounts of each fatty acid in each sample. It was clearly demonstrated that touching sebum-rich areas of the face immediately prior to fingerprint deposition resulted in a significant increase in the amount of fatty acids and squalene deposited in the resulting 'groomed' fingerprints. Serine was the most abundant amino acid identified followed by glycine, alanine and aspartic acid. The significant quantitative differences between the 'natural' and 'groomed' fingerprint samples seen for fatty acids were not observed in the case of the amino acids. This study demonstrates the variation in latent fingerprint composition between individuals and the impact of the sampling protocol on the quantitative analysis of fingerprints.

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Section: Fatty Acid Compositionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Variation in amino acid and lipid composition of latent fingerprints

Croxton

Baron

Butler

et al. 2010

Forensic Science International

197

210

View full text Add to dashboard Cite

show abstract

“…Other GC/MS studies have focused on the analysis of lipid material and shown that relatively large lipid compounds can be analyzed by this technique and that single fingerprint analysis is possible if a component is present in sufficient quantity. 1,3,11 Amino acids have been detected in fingerprints analyzed by MALDI using the "dry−wet" method of sample preparation, 46 but this was not available at the time of analysis. ToF-SIMS analysis detected for the first time many of the lipids detected by GC/MS and MALDI, but was also able to detect inorganic components.…”

Section: ■ Discussionmentioning

confidence: 99%

Chemical Characterization of Latent Fingerprints by Matrix-Assisted Laser Desorption Ionization, Time-of-Flight Secondary Ion Mass Spectrometry, Mega Electron Volt Secondary Mass Spectrometry, Gas Chromatography/Mass Spectrometry, X-ray Photoelectron Spectroscopy, and Attenuated Total Reflection Fourier Transform Infrared Spectroscopic Imaging: An Intercomparison

et al. 2012

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ABSTRACT:The first analytical intercomparison of fingerprint residue using equivalent samples of latent fingerprint residue and characterized by a suite of relevant techniques is presented. This work has never been undertaken, presumably due to the perishable nature of fingerprint residue, the lack of fingerprint standards, and the intradonor variability, which impacts sample reproducibility. For the first time, time-of-flight secondary ion mass spectrometry, high-energy secondary ion mass spectrometry, and X-ray photoelectron spectroscopy are used to target endogenous compounds in fingerprints and a method is presented for establishing their relative abundance in fingerprint residue. Comparison of the newer techniques with the more established gas chromatography/mass spectrometry and attenuated total reflection Fourier transform infrared spectroscopic imaging shows good agreement between the methods, with each method detecting repeatable differences between the donors, with the exception of matrix-assisted laser desorption ionization, for which quantitative analysis has not yet been established. We further comment on the sensitivity, selectivity, and practicability of each of the methods for use in future police casework or academic research.

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Gas Chromatography in Forensic Science

Zadora

Zuba

2009

Encyclopedia of Analytical Chemistry

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Materials such as biological fluids and tissues, fire debris, car paints, and fibers are the most common evidential materials analyzed by forensic chemists and are characterized by a high degree of complexity. Developments in forensic science have introduced many vital crime‐solving techniques over the past decades. The introduction of gas chromatography (GC) has broadened the range of available tools, but more importantly, has improved the credibility of analytical findings by demonstrating a high separation power and high sensitivity. GC is often coupled with molecular detection methods such as mass spectrometry, or infrared spectrometry, making it a powerful tool in identification of a wide variety of chemical substances. Some recent applications of GC in the forensic sciences, including those in forensic toxicology, are presented in the article, which include alcohol and drugs in drivers, markers of alcohol abuse, volatiles and anesthetics, carbon monoxide (CO) poisoning, other poisons, drug‐facilitated sexual assault (DFSA) and drug profiling, and more general application to criminalistics in areas such as fire debris, car paints, explosives, toners, fibers, inks, and fingermark analysis.

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Changes in the lipid composition of latent fingerprint residue with time after deposition on a surface

Cited by 225 publications

References 5 publications

Variation in amino acid and lipid composition of latent fingerprints

Variation in amino acid and lipid composition of latent fingerprints

Gas Chromatography in Forensic Science

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