Raman spectroscopy of blue gel pen inks

Raman spectroscopy offers great potential for the nondestructive confirmatory identification of body fluids

“…Some examples of its use today involve the identification of drugs [2], lipsticks [3], and fibers [4], as well as paint [5] and ink [6] analysis. The theory behind Raman spectroscopy is based on the inelastic scattering of low-intensity, nondestructive laser light by a solid, liquid or gas sample.…”

Resonance Raman and UV–visible spectroscopy of black dyes on textiles

“…The use of Raman spectroscopy in forensic science has also received increasing attention, and examples include reports of its application to analyse body fluids [3], drugs and explosives [4][5][6][7], paints [8][9][10], pen inks [11][12][13][14][15], and lipsticks [16]. Studies exploring the use of resonance, non-resonance, and surface-enhanced Raman spectroscopy for forensic fibre examination have also been reported, including those of both dyed and non-dyed textile fibres [17][18][19][20][21][22][23][24][25].…”

Principal component analysis for the forensic discrimination of black inkjet inks based on the Vis–NIR fibre optics reflection spectra

“…The preliminary results can facilitate the choice of other methods which are needed to submit a sample. The most widely used are spectroscopic, mostly non-destructive or micro-destructive methods such as XRF, UV-Vis, Vis-NIR, Raman and FTIR spectroscopy and microspectrophotometry (MSP) [5][6][7][8][9][10][11]. In forensic analysis of documents which form evidence during the examination, there is suitable application of analytical methods without the use of aggressive chemicals that could damage or destroy the studied material.…”