Multivariate Statistical Interpretation of Fountain Solutions as Indicator of Environmental Pollution
JELENA S. KIURSKI1, IVANA B. OROS1, NEBOJŠA M. RALEVIĆ1, ILIJA M. KOVAČEVIĆ1, SAVKA Z. ADAMOVIĆ1, JELENA D. KRSTIĆ1, LJUBO M. NEDOVIĆ1
University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
In this study, the analysis of physico-chemical parameters of spent fountain solutions from 8 printing facilities from Novi Sad was carried out with the aim to monitor the changes in the fountain solutions quality and to indicate the main sources responsible for the quality variation. Spent fountain solutions were collected from different offset printing machines (sheet-fed and web-fed) and analyzed using the standard procedures. Cluster analysis (CA) and principal component analysis (PCA) were applied for the interpretation a quality of fountain solutions. The results of CA showed two groups of similarity between the printing facilities (PFs) and physico-chemical characteristics of spent fountain solutions. The cluster 1 (PF 1, 3, 5 - 8) corresponded to less polluted printing facilities due to the application of eco-friendly chemicals and the environmental awareness of these PFs about the cleaner production. Four principal components (PCs) were identified as responsible for the data structure explaining 92.69% of the total variance of datasets. These methods are valuable in the wastewater quality assessment, identification of pollution sources and understanding of variations in quality for effective management of wastewater resources. The results provide a detailed analysis of the quality of spent fountain solutions with emphasis on the main sources of fountain solution contamination during offset printing processes. It could be very useful for the offset printing companies because it would push them to more effectively manage their waste streams and take care of the environment in the future.