ANALYSIS OF DISPUTED DOCUMENTS WITH UV/VISIBLE SPECTROSCOPY ANDSEM FOR NANOMATERIAL IN PAPER TO DECIPHER FELONIES IN FORENSICS
Keywords:
Document, Ink, SEM-EDX technique, SecurityAbstract
In forensic studies the composition of ink is used as writing media used in fountain pen, ball point pen, and gel pen, as well as ink used in printed security papers or ink used in merchandise for printing and logos. Certain forensic dispersive microanalysis method. However, they are combined with a complete reflection technique to provide a better level of specificity. Characterization can be done using the SEM-EDS technique.Inorganic elements present in the cellulose matrix of paper can be characterized and identified using the SEM-EDS technique. Ink has a low iron(II) sulphate level, it is less prone to decomposition and provides higher stability on paper, leading to the conclusion that the document can be retained for a longer period of time under certain environmental circumstances.
References
Barker, J., R. Ramotowski, and J. Nwokoye, The effect of solvent grade on thin layer chromatographic analysis of writing inks. Forensic science international, 2016. 266: p. 139-147.
Ziêba Palus, J. and B.M. Trzciñska, Establishing of chemical composition of printing ink. Journal of forensic sciences, 2011. 56(3): p. 819-821.
Jones, R.W. and J.F. McClelland, Analysis of writing inks on paper using direct analysis in real time mass spectrometry. Forensic science international, 2013. 231(1-3): p. 73-81.
Poon, N., S. Ho, and C. Li, Differentiation of coloured inks of inkjet printer cartridges by thin layer chromatography and high performance liquid chromatography. Science & justice: journal of the Forensic Science Society, 2005. 45(4): p. 187-194.
Buzzini, P. and E. Suzuki, Forensic applications of Raman spectroscopy for the in situ analyses of pigments and dyes in ink and paint evidence. Journal of Raman Spectroscopy, 2016. 47(1): p. 16-27.
Foner, H. and N. Adan, The characterization of papers by X-ray diffraction (XRD): measurement of cellulose crystallinity and determination of mineral composition. Journal of the Forensic Science Society, 1983. 23(4): p. 313-321.
Causin, V., et al., Forensic differentiation of paper by X-ray diffraction and infrared spectroscopy. Forensic Science International, 2010. 197(1-3): p. 70-74.
Ezcurra, M., et al., Analytical methods for dating modern writing instrument inks on paper. Forensic Science International, 2010. 197(1-3): p. 1-20.
Ellen, D., S. Day, and C. Davies, Scientific examination of documents: methods and techniques. 2018: CRC Press.
Brunelle, R.L. and K.R. Crawford, Advances in the forensic analysis and dating of writing ink. 2003: Charles C Thomas Publisher.
Huber, R.A. and A.M. Headrick, Handwriting identification: facts and fundamentals. 1999: CRC press.
Adams, J., Analysis of printing and writing papers by using direct analysis in real time mass
spectrometry. International Journal of Mass Spectrometry, 2011. 301(1-3): p. 109-126.
Bezák, T., et al., Surface roughness determination using laser scanning confocal microscope Zeiss LSM 700. Metal, 2013. 2013: p. 22nd.
Shaffer, D.K. Forensic document analysis using scanning microscopy. in Scanning Microscopy 2009. 2009. International Society for Optics and Photonics.