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Analysis of Fingerprints by Desorption Electrospray Ionisation Mass Spectrometry imaging

Waters

Determination of the gender of an individual using DESI-MS on their fingerprint

14 Sept 2017

Mass Spectrometry Imaging has been used increasingly by researchers to investigate the distribution of metabolites, drugs, peptides and proteins at tissue surfaces. The chemical composition of the fingerprint is dependent on glandular secretions, excretion of ingested substances and exposure to environmental chemicals. This application note demonstrates the ability of matrix-assisted laser desorption ionization mass spectrometry to analyze fingerprints and determine the gender of the individual who left it based on its chemical composition.

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Mass SpectrometryMass spectrometry (MS) is a powerful analytical technique used to identify and quantify molecules based on the mass-to-charge ratio of gas-phase ions. It provides detailed information about the structure, composition, and properties of compounds and is widely used across fields such as environmental monitoring, materials science, drug discovery and development, food and beverage testing, and wider chemical research. Key MS techniques include tandem mass spectrometry (MS/MS), liquid chromatography–mass spectrometry (LS-MS) and inductively coupled plasma (ICP-MS). Choosing from these wide range of techniques and technologies can be a daunting task, so keep up to date with scientific applications, performance expectations, and customer reviews here all in one place. Visit our product directory to receive quotes direct from the manufacturer. MALDI-TOF MSMALDI-TOF mass spectrometers (matrix-assisted laser desorption/ionization time-of-flight) are used for the mass analysis of large molecules, including proteins, DNA, polymers and other macromolecules due to its relatively soft ionization, reducing fragmentation whilst allowing fast data acquisition. Tandem mass analyzers such as TOF/TOF systems can be used to increase resolution and sensitivity of your analysis. Find the best MALDI-TOF products in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Evidence Collection and AnalysisEvidence Collection and Analysis is the retrieval and subsequent investigation into criminal evidence obtained from a crime scene. Forensic genetic instruments, kits and reagents enable the analysis of evidence collected  at the crime scene. Reagents and kits for presumptive analysis for body fluids such as blood, saliva and semen in addition to drugs and narcotics test kits are used for CSI. Fingerprinting equipment, forensic light sources, casting kits and equipment for collecting recoverable materials can be found in the directory.Forensic InvestigationForensic investigation is a diverse collection of scientific techniques and methods for the identification and characterization of chemicals relating to crime scene investigations.Imaging Mass SpectrometryHuman DNA Identification

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