Acta Chimica Slovaca (ACS) publishes papers on fundamental and applied aspects of chemistry, biochemistry, chemical technology, chemical engineering and process control, biotechnology and food technology. Welcome are also topics which include chemical aspects of materials, physical chemistry and chemical physics, analytical chemistry, macromolecular chemistry and biomedical engineering.

Pre-processing of inkjet prints NIR spectral data for principal component analysis

Michal Oravec *, Lukáš Gál, Michal Čeppan

Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK- 812 37 Bratislava, Slovak Republic

E-mail: *

Abstract: This paper presents a novel approach in non-destructive analysis of inkjet-printed documents. Our method is based on the combination of molecular spectroscopy in the Near Infrared Region (NIR) and a chemometric method – principal component analysis (PCA). The aim of this work was to prepare spectral data for the analysis of the interrelationships between 19 samples consisting of the same type of office paper on which black squares were full printed in black ink only. The spectra were obtained separately using the Ocean Optics System in two spectral regions, i.e., overtones: 1000 – 1600 nm and combination bands: 1600 – 2300 nm, with the paper base. Experimental results confirmed the high reliability of the proposed approach despite the sparse dataset.

Keywords: NIR spectra pre-processing, principal component analysis

Full paper in Portable Document Format: acs_0229.pdf

Acta Chimica Slovaca, Vol. 8, No. 2, 2015, pp. 191—196, DOI: 10.1515/acs-2015-0031