Chemical Differences Are Observed in Children’s Versus Adults’ Latent Fingerprints as a Function of Time*

Antoine, Mathias; Mortazavi, Shirin R.; Miller, Angela D.; Miller, Lisa

doi:10.1111/j.1556-4029.2009.01262.x

Cited by 112 publications

(107 citation statements)

References 32 publications

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“…1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 4 Latent fingerprints are a highly variable combination of chemicals that originate from (predominantly) natural secretions from pores found on the skin and from exogenous contaminants 1 , 2 , 3 , 4 . The natural components consist mainly of eccrine 5 and sebaceous gland secretions 6 . Eccrine gland secretions from the fingers, hands, and soles of the feet contain both organic and inorganic species (amino acids and salts).…”

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confidence: 99%

Determination of the Deposition Order of Overlapping Latent Fingerprints and Inks Using Secondary Ion Mass Spectrometry

et al. 2012

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A new protocol using time-of-flight secondary ion mass spectrometry (ToF-SIMS) has been developed to identify the deposition order of a fingerprint overlapping an ink line on paper. By taking line scans of fragment ions characteristic of the ink molecules (m/z 358.2 and 372.2) where the fingerprint and ink overlap and by calculating the normalised standard deviation of the intensity variation across the line scan, it is possible to determine whether or not a fingerprint is above ink on a paper substrate. The protocol adopted works for a selection of fingerprints from four donors tested here and for a fingerprint that was aged for six months; for one donor, the very faint fingerprints could not be visualized using either standard procedures (ninhydrin development) or SIMS and therefore the protocol correctly gives an inconclusive result.

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mentioning

confidence: 99%

Determination of the Deposition Order of Overlapping Latent Fingerprints and Inks Using Secondary Ion Mass Spectrometry

et al. 2012

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“…Gender determination [21], donor classification [21][22][23][24][25], and aging studies [26][27][28][29][30][31][32] were among the major targets of fingerprint research recently. Francese et al show in their review article the power of MALDI mass spectrometry for the manifold analyses of fingerprints, even after aging [33].…”

Section: Introductionmentioning

confidence: 99%

“…GC-MS was used in 1999 to identify components of fingerprint residues, including free fatty acids, triglycerides, wax ester, amino acids, glycerol, cholesterol, and squalene [17], followed by several studies combining chromatography, mass spectrometry, and spectroscopic techniques [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. Gender determination [21], donor classification [21][22][23][24][25], and aging studies [26][27][28][29][30][31][32] were among the major targets of fingerprint research recently.…”

Section: Introductionmentioning

confidence: 99%

Fatty Acid Structure and Degradation Analysis in Fingerprint Residues

Pleik

Spengler

Schäfer

et al. 2016

J. Am. Soc. Mass Spectrom.

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Abstract. GC-MS investigations were carried out to elucidate the aging behavior of unsaturated fatty acids in fingerprint residues and to identify their degradation products in aged samples. For this purpose, a new sample preparation technique for fingerprint residues was developed that allows producing N-methyl-N-trimethylsilyltrifluoroacetamide (MSTFA) derivatives of the analyzed unsaturated fatty acids and their degradation products. MSTFA derivatization catalyzed by iodotrimethylsilane enables the reliable identification of aldehydes and oxoacids as characteristic MSTFA derivatives in GCMS. The obtained results elucidate the degradation pathway of unsaturated fatty acids. Our study of aged fingerprint residues reveals that decanal is the main degradation product of the observed unsaturated fatty acids. Furthermore, oxoacids with different chain lengths are detected as specific degradation products of the unsaturated fatty acids. The detection of the degradation products and their chain length is a simple and effective method to determine the double bond position in unsaturated compounds. We can show that the hexadecenoic and octadecenoic acids found in fingerprint residues are not the pervasive fatty acids Δ9-hexadecenoic (palmitoleic acid) and Δ9-octadecenoic (oleic acid) acid but Δ6-hexadecenoic acid (sapienic acid) and Δ8-octadecenoic acid. The present study focuses on the structure identification of human sebum-specific unsaturated fatty acids in fingerprint residues based on the identification of their degradation products. These results are discussed for further investigations and method developments for age determination of fingerprints, which is still a tremendous challenge because of several factors affecting the aging behavior of individual compounds in fingerprints.

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“…Mong and coworkers (1999) observed substantial oxidative degradation of squalene and other unsaturated compounds such as wax esters and fatty acids over time compared to their saturated analogs. It has also been determined that the decrease in abundance of volatile fatty acids and other lipid compounds over time occurs at different rates in latent fingerprint residues from children and adults, and different temperature and humidity storage conditions affect degradation rates as well (Noble 1995, Buchanan et al 1996, Antoine et al 2010). …”

Section: Fingerprint Changes Over Timementioning

confidence: 99%

“…For example, the chemical composition of children's latent fingerprint residue is markedly different compared to that of adults as the lipid content in sweat increases after puberty, allowing determination of the age--range of the subject (Noble 1995, Buchanan et al 1996, Antoine et al 2010. Differences between individuals' endogenous fingerprint compound levels have been observed, and it is thought that these slight inter--personal variations in sebaceous fatty acid mixture yield unique individualizing scents, which is the basis for canine tracking (Nicolaides 1974, Knowles 1978, Ramotowski 2001.…”

Section: Fingerprint Compoundsmentioning

confidence: 99%

Statistical Data Analyses of Trace Chemical, Biochemical, and Physical Analytical Signatures

Udey

2013

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Analytical and bioanalytical chemistry measurement results are most meaningful when interpreted using rigorous statistical treatments of the data. The same data set may provide many dimensions of information depending on the questions asked through the applied statistical methods. Three principal projects illustrated the wealth of information gained through the application of statistical data analyses to diverse problems.Firstly, novel aerosol test particles containing DNA barcodes were developed for the accurate assessment of aerosol transport and fate in populated locations. Aerosols are central to human and environmental health, and understanding the properties of these aerosols that are pervasive in our lives is essential. Test particles composed of FDA--approved saccharide food additives were generated using both a modified inkjet printer and a commercial spray dryer.Univariate statistical methods were used to evaluate generated particle size--distributions during production optimization. Non--coding DNA templates were incorporated into the particles as unique particle identifiers, which yielded customized test particles detectable using highly specific quantitative real--time polymerase chain reaction (QRT--PCR) assays. These safe, customizable, and specifically detected aerosol test particles will provide vital experimental feedback for evaluating aerosol dispersion and transport models. The project culminated with a successful demonstration of the aerosol test particles in an atmospheric release test.Secondly, an original method for non--invasively analyzing the chemical profiles of latent fingerprint residues was developed in order to gain a new level of information from the most common type of forensic evidence. Passive solid--phase microextraction (SPME) headspace sampling collects both endogenous and exogenous volatile and semi--volatile compounds contained in the fingerprint residue while preserving the fingerprint for traditional analyses.The information--rich chemical profiles obtained from gas chromatography--mass spectrometry (GC--MS) analyses of the SPME samples were used to quantitatively compare fingerprint compounds both between subjects and over a time course of 30 days using multivariate statistical analyses.Finally, endogenous metabolite profiles of cancer cells treated with anti--cancer agents were analyzed using gas chromatography--and high performance liquid chromatography--mass spectrometry (GC--MS and HPLC--MS), and the resulting complex data sets were interrogated using univariate and multivariate statistical analyses (e.g. ANOVA, PCA, PLS--DA, OPLS--DA).Possible modes of cytotoxicity of cisplatin and taxol, two commonly used cancer therapeutics, in breast and lung cancer cells were elucidated using statistical methods for data reduction in order to focus on the cellular biochemical processes most affected by drug treatment.Understanding how successful therapeutics interact with cells leads to design of novel anti--cancer agents that are more targeted and effective, minimizing dose-...

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Chemical Differences Are Observed in Children’s Versus Adults’ Latent Fingerprints as a Function of Time*

Cited by 112 publications

References 32 publications

Determination of the Deposition Order of Overlapping Latent Fingerprints and Inks Using Secondary Ion Mass Spectrometry

Determination of the Deposition Order of Overlapping Latent Fingerprints and Inks Using Secondary Ion Mass Spectrometry

Fatty Acid Structure and Degradation Analysis in Fingerprint Residues

Statistical Data Analyses of Trace Chemical, Biochemical, and Physical Analytical Signatures

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