Open AccessForensic analysis on printer inks via chemometrics
Author(s) -
L H Mohd Zawawi,
Nor Fadhillah Mohamed Azmin,
Mohd Firdaus Abd Wahab,
Sultan Ibrahim,
Mohd Yusri Bin Mohd Yunus
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1192/1/012029
Subject(s) - principal component analysis , chemometrics , computer science , component (thermodynamics) , sample (material) , inkwell , pattern recognition (psychology) , process engineering , artificial intelligence , engineering , chemistry , chromatography , speech recognition , machine learning , physics , thermodynamics
Printer inks are becoming necessary for utilization for wide range of purposes by society in current times with rapid development in technology and digital media area. Thus, forgery and counterfeiting becoming easier for the criminals. It is dangerous as some criminals will misused the technology by mean of addition and adulteration of parts of text or numbers on document as the inks and document can be made as an evidence in the trial court. Thus, the characterization and differentiation of the printed inks in the suspected documents (civil or criminal cases) may provide important information about the authenticity of the printer inks. The focus of this study to differentiate the chemical component of three different types of sample inks by incorporation of FTIR spectrophotometer with principal component analysis. The unique features of the ink samples were unmasked from the score plots of the principal component analysis. Thus, the graphical representation provided by the FTIR spectra with principal component analysis enabled the discrimination certain chemical in the printer inks.