Direkt zum Inhalt
  • Über ELGA
    • Über ELGA
    • Reinstwasser
    • Technologien zur Wasseraufbereitung
    • Verunreinigungen im Wasser
    • Whitepaper rund um Laborwasser
    • ELGA weltweit
    • Nachhaltigkeit
    • Klinische Risiken reduzieren
    • Karriere
    • Veranstaltungen
    • HPLC in der Pharmaindustrie
    • HPLC Wasserreinheit
  • Blog
    • Analytical Chemistry
    • Clinical & Pharma
    • Cool Science
    • Environment and sustainability
    • Life in the lab
    • Purelab product design
    • Science of the future
    • Water Purity
    • Water in the lab
  • Kontakt
  • English
  • Español
  • Français
  • Italiano
  • Português
  • 日本語
  • 中文
Startseite ELGA LabWater
  • Produkte
  • Anwendungen
  • Referenzen
  • Service
  • Produkte
    • PURELAB
    • CENTRA
    • MEDICA
    • BIOPURE
    • Classic
  • Anwendungen
  • Referenzen
    • Die Geheimnisse der Antarktis mithilfe von Reinstwasser entschlüsseln
    • Abbott Diagnostics entscheidet sich für ELGA MEDICA Systeme in Südasien
    • Bedeutung von Reinstwasser Typ 1+ für die Entwicklung von Generika
    • Ca’Foscari University- A New Method for Investigating Environmental Tracers in Ice
    • Ca’Foscari University- Investigating Contaminants in Antarctic Ice
    • DASA: Das größte medizinische Diagnostikunternehmen in Brasilien
    • ELGA unterstützt Immunserologie-Labore bei der Maximierung der Betriebszeit
    • MEDICA® Pro ausgewählt für Siemens ADVIA® Analysatoren im City General Hospital
    • Optimale Wasserqualität für mikrobiologische Forschung und Lehre
    • PURELAB® flex: ein ideales Trainingssystem für heutige Forschungsverfahren
    • Sichere Reinstwasserversorgung für präzise Produkttests
    • Zentrale Reinstwasser-Aufbereitung für Analyser
  • Service
    • Service und Validierung
    • Laborplanung
    • Ein Produkt registrieren
    • Register Your Product (USA & Canada Only)
  • Produkte
    • PURELAB
      • PURELAB Chorus 1 Complete
      • PURELAB® Chorus 1
      • PURELAB Chorus 2+
      • PURELAB® Chorus 2
      • PURELAB® Chorus 3
      • PURELAB® flex 1 und 2
      • PURELAB® flex 3 und 4
    • CENTRA
      • CENTRA® 60/120
      • CENTRA® RDS
      • CENTRA® R200
    • MEDICA
      • MEDICA® 7/15
      • MEDICA® EDI 15/30
      • MEDICA® Pro EDI 60/120
      • MEDICA® Pro-LPS
      • MEDICA® Pro-R und Pro-RE
      • MEDICA® R200
    • BIOPURE
      • BIOPURE 7/15
      • BIOPURE 60/120
      • BIOPURE 200/300/600
    • Classic
      • PURELAB® Classic
  • Anwendungen
  • Referenzen
    • Die Geheimnisse der Antarktis mithilfe von Reinstwasser entschlüsseln
    • Abbott Diagnostics entscheidet sich für ELGA MEDICA Systeme in Südasien
    • Bedeutung von Reinstwasser Typ 1+ für die Entwicklung von Generika
    • Ca’Foscari University- A New Method for Investigating Environmental Tracers in Ice
    • Ca’Foscari University- Investigating Contaminants in Antarctic Ice
    • DASA: Das größte medizinische Diagnostikunternehmen in Brasilien
    • ELGA unterstützt Immunserologie-Labore bei der Maximierung der Betriebszeit
    • MEDICA® Pro ausgewählt für Siemens ADVIA® Analysatoren im City General Hospital
    • Optimale Wasserqualität für mikrobiologische Forschung und Lehre
    • PURELAB® flex: ein ideales Trainingssystem für heutige Forschungsverfahren
    • Sichere Reinstwasserversorgung für präzise Produkttests
    • Zentrale Reinstwasser-Aufbereitung für Analyser
  • Service
    • Service und Validierung
    • Laborplanung
    • Ein Produkt registrieren
    • Register Your Product (USA & Canada Only)
  • English
  • Español
  • Français
  • Italiano
  • Português
  • 日本語
  • 中文
  • Datenschutzerklärung
  • Geschäftsbedingungen
  • Globale Entsprechenserklärungen
  • Patente
  • Impressum
  • Startseite
  • Node
  • Determining Sex Through The Analysis Of Fingerprint Residue
Cool Science
Analytical Chemistry

Determining Sex Through The Analysis Of Fingerprint Residue

19 Jan. 2020
- by Dr Alison Halliday

Finger Print

Fingerprint examination remains one of the most important forensic methods in crime investigations. A new study suggests that a new chemical technique could help determine the owner’s sex – potentially narrowing the list of suspects by 50 per cent.

Forensic fingerprint analysis has been used to identify criminals for over a century. The process begins with a deposited – or ‘latent’ print found at a crime scene or on an item of evidence. Analysts then visually assess its qualities – including the shape, depth and length of the ridges – to find out if it matches a suspect.

Going Beyond the Visuals

But in cases where no suspects are identified, chemical analysis of the fingerprint residue can also provide useful information for eliminating potential suspects. The main components of fingerprint residues are water, amino acids, proteins, inorganic materials and many fatty acids. To detect these, forensic scientists can apply a range of techniques involving the use of substances that react with certain molecules and change its optical or chemical properties. For example, the chemical 1,2-indanedione (IND) reacts with amino acids producing fluorescent compounds.

In a new study, published in the Journal of Forensic Sciences, scientists use the fluorescence spectra of IND with amino acids in fingerprint residue as a way of determining sex.1

A More Sensitive Technique

The researchers gathered latent fingerprint samples on white paper from 21 male and 21 female students.  They determined fluorescence intensity broadband emission spectra by mixing samples with IND solution, leaving at room temperature for a day and then carrying out optical spectroscopy techniques. The water used to make all experimental solutions was ultrapure generated from an ELGA PURELAB® flex water purification system.

The team found that this new fluorescence technique is much more sensitive than previous detection methods based on absorbance, opening new possibilities for detecting very small concentrations of amino acids in fingerprint residue.

Sex Determination

The scientists next analysed fingerprint samples pooled by sex, finding that the average fluorescence intensity was almost two times higher in the females than males. And by targeting some individual amino acids, the researchers achieved even higher differentials – for example, lysine and arginine peaks intensity were more than three times higher than most others. 

They also collected and analysed four fresh fingerprints on plastic wrap from a further four volunteers – two male and two female – from their own laboratory. Although these were small numbers, the results showed an even clearer sex difference, with fluorescence readings from samples from females more than two times that of males.

A Potentially Valuable New Forensic Tool

This study shows that fluorescence is a highly sensitive detection method for detecting amino acids in latent fingerprint residue – and suggests it could be used in sex determination. If validated in larger studies, the method could potentially provide a valuable new tool to support forensic investigations.

In the future, it could even be further refined for scanning latent fingerprints directly on the surface that it is deposited without the need for extraction.

Why Choose ELGA LabWater?

ELGA Labwater has been a trusted name in pure and ultrapure water since 1937. We believe in giving you choice in how you use our water purification solutions, supported by excellent service and support.


Reference:

  1. Alaoui, IM., Halamek, J., Fluorescence of 1,2-Indanedione with Amino Acids Present in the Fingerprint Residue: Application in Gender Determination. J Forensic Science, doi: 10.1111/1556-4026.14025 


Dr Alison Halliday
After completing an undergraduate degree in Biochemistry & Genetics at Sheffield University, Alison was awarded a PhD in Human Molecular Genetics at the University of Newcastle. She carried out five years as a Senior Postdoctoral Research Fellow at UCL, investigating the genes involved in childhood obesity syndrome. Moving into science communications, she spent ten years at Cancer Research UK engaging the public about the charity’s work. She now specialises in writing about research across the life sciences, medicine and health.

 

  • Angebot
  • Angebot anfordern
  • Produkt-Vorführung buchen
  • Einen Ansprechpartner finden

Angebot

Ich habe die Datenschutzerklärung gelesen und verstanden

Angebot anfordern

Ich habe die Datenschutzerklärung gelesen und verstanden

Produkt-Vorführung buchen

Ich habe die Datenschutzerklärung gelesen und verstanden

Call us

Can't find what you are looking for?

Support Number
+44 (0)20 3567 7300
United Kingdom Sales
+44 (0)1628 879 704
United States of America Sales
+1 877-315-3542
France Sales
+33 1 40 83 65 00
China Sales
+86 400-616-8882

 

ELGA LabWater Deutschland

ELGA LabWater
Veolia Water Technologies Deutschland GmbH
Lückenweg 5
29227 Celle
T: +49 (0) 51 41 803 0
F: +49 (0) 51 41 803 384

Die Spezialisten für Reinstwasser

  • Service und Validierung
  • Veranstaltungen

Referenzen

  • Abbott Diagnostics
  • DASA Medical Diagnostics
  • NeoDIN Medical Institute
  • North Staffordshire NHS Trust
  • Berufskolleg Olsberg

Ressourcen

  • Erfahren Sie mehr über Reinstwasser
  • Whitepaper rund um Laborwasser
  • Technologien zur Wasseraufbereitung
  • Laboranwendungen
  • Verunreinigungen im Wasser

Blogs

  • Latest Blog
  • Water Purity - Different Types of Pure Water
  • What is Clinical Laboratory Reagent Water (CLSI)?
  • What is Total Organic Carbon (TOC)?
  • Sprache
    • Deutsch
    • English
    • Español
    • Français
    • Italiano
    • Português
    • 日本語
    • 中文
  • Andere Veolia Webseiten
    • Veolia
    • Veolia Fondation
    • Veolia Water Technologies

© VWS (UK) Ltd, handelnd als ELGA LabWater.2021- Alle Rechte vorbehalten.
ELGA ist der globale Markenname von Veolia für Laborwasser.

  • Datenschutzerklärung
  • Geschäftsbedingungen
  • Globale Entsprechenserklärungen
  • Patente
  • Impressum
Elga Veolia
TOP

© 2017 ELGA Veolia