Application of MALDI MS imaging after sequential processing of latent fingermarks

Chemical Composition of the Fingermark Residue: Assessment of the Intravariability Over One Year Using MALDI-MSI

“…Since 2014, MALDI-MSI is recognized as a class C fingermark recovery technique by the Home Office [24] and has proven its applicability on research projects and casework but also in sequence with other visualisation techniques [1,25,26]. These findings support that MALDI-MSI could become an essential asset when it comes to the analysis of fingermarks for both imaging and profiling purposes.…”

Interpol review of fingermarks and other body impressions (2019 – 2022)

“…Other sections – The following papers are detailed in other sections of this report: XFM to study the distribution of inorganic ions in fingermarks [ 150 ] and synchrotron-sourced ATR-FTIR to investigate the aging of natural fingermarks [ 162 ] – See Section 3.1 ; DESI-MSI, MALDI-MSI, and ToF-SIMS to distinguish contact with drugs from drug consumption [ 193 ] – See Section 3.3 ; DESI-MSI to classify condom lubricants in CA-processed fingermarks [ 194 ] – See Section 3.3 ; MALDI-MSI applied in sequence with conventional techniques to detect fingermarks on the adhesive-side of tapes [ 223 ] – See Section 4.4.1 ; ToF-SIMS to image fingermarks on worn RMB cotton-based banknotes [ 224 ] – See Section 4.4.2 ; MALDI-MS to provide intelligence about the human origin of blood [ 225 ] and haemoglobin variants [ 175 ] – See Section 4.5.1 ; design of a control test for MSI-based techniques [ 226 ] – See Section 4.6.1 .…”

On‐tissue chemical derivatization reagents for matrix‐assisted laser desorption/ionization mass spectrometry imaging

“…Since its introduction in 1997 by Caprioli et al, 1 matrix‐assisted laser desorption/ionization mass spectrometry imaging (MALDI MSI) has been applied to a large number of molecular species within biological tissues such as peptides, 2 lipids, 3 glycans, 4 proteins, 5 and drugs 6 . A wide range of research fields were investigated through MALDI MSI studies such as pharmaceutical sciences, 7 clinical biomarkers discovery, 8 food analysis, 9 plant biology, 10 forensic sciences, 11 and others. Indeed, MALDI MSI is a powerful technique that allows the mapping of different types of analytes within tissues without any prior knowledge, while preserving the spatial information along with the mass analysis.…”