Application of IR spectroscopy and PLS regression for quantitative analysis of model asphaltene solutions in toluene
Authors
Bikmeev Denis Minigaynovich
RN-BashNIPIneft LLC (Company of Rosneft Group)
Bikmeeva Almira Khalilovna
Ufa State Petroleum Technological University
Dubrovsky Dmitry Igorevich
RN-BashNIPIneft LLC (Company of Rosneft Group)
Badikova Albina Darisovna
Ufa State Petroleum Technological University
Keywords:
asphaltenes, IR spectroscopy, chemometrics, principal component analysis, partial least squares, model solutions, petroleum analysis
Abstract
A method for the quantitative analysis of model asphaltene solutions in toluene using infrared spectroscopy and chemometric techniques is presented. Solutions with concentrations of 2–10 wt.% were studied using the i-Red 7800 u-L spectrometer. Absorption bands characteristic of functional groups in asphaltenes were analysed. To improve the accuracy of quantitative determination, multivariate data analysis methods were applied – principal component analysis and partial least squares. The resulting regression model showed a high degree of agreement between measured and predicted concentration values. The obtained results demonstrate the potential of the proposed approach for rapid analysis and quantitative assessment of asphaltenes in organic solutions.
DOI: 10.33184/bulletin-bsu-2025.4.10
Author Biographies
Bikmeev Denis Minigaynovich, RN-BashNIPIneft LLC (Company of Rosneft Group)
PhD in Chemistry, Associate Professor of the Department of Physicaland Organic Chemistry, Ufa State Petroleum Technological University, Russia.Expert of the Core and Reservoir Fluids Research Department,RN-BashNIPIneft LLC (Company of “Rosneft” Group), RussiaORCID: 0009-0001-0300-7748 Scopus Author ID: 56663161200
Bikmeeva Almira Khalilovna, Ufa State Petroleum Technological University
PhD in Chemistry, Associate Professor of the Department of Physicaland Organic Chemistry ORCID: 0000-0002-3763-431X Scopus Author ID: 57216747179
Dubrovsky Dmitry Igorevich, RN-BashNIPIneft LLC (Company of Rosneft Group)
PhD in Chemistry, Leading Specialist of the Core and Reservoir Fluids Research Department,RN-BashNIPIneft LLC (Company of Rosneft Group), Russia Scopus Author ID: 56708829300ORCID: 0000-0002-6537-0913
Badikova Albina Darisovna, Ufa State Petroleum Technological University
Doctor of Technical Sciences, Professor, Head of the Department of Physicaland Organic ChemistryORCID: 0000-0003-4696-4342 Scopus Author ID: 57210660954
