On site refractometric determination of composition and component concentrations in hydrocarbon mixtures

Vadim Davydov, Higher School of Physics and Materials Technology, Peter the Great St. Petersburg Polytechnic University, Saint-Petersburg, 195251, Russia
Roman Davydov, Higher School of Cyberphysical Systems & Control, Peter the Great St. Petersburg Polytechnic University, Saint-Petersburg, 195251, RussiaFollow
Ekaterina Isupova, Department of Optical and Quantum Communication Systems, The Bonch-Bruevich Saint-Petersburg State University of Telecommunications, Saint-Petersburg, 193232, Russia
Boudjemila Linda, Department of Physics, The Bonch-Bruevich Saint-Petersburg State University of Telecommunications, Saint-Petersburg, 193232, Russia
Olga Vezo, Centre for Diagnostics of Functional Materials for Medicine, Pharmacology and Nanoelectronics, St. Petersburg State University, St. Petersburg, 199034, Russia
Daniil Provodin, Higher School of Physics and Materials Technology, Peter the Great St. Petersburg Polytechnic University, Saint-Petersburg, 195251, Russia
Klimenko Roman, Department of Optical and Quantum Communication Systems, The Bonch-Bruevich Saint-Petersburg State University of Telecommunications, Saint-Petersburg, 193232, Russia
Belyaev Alexander, Department of Physics, The Bonch-Bruevich Saint-Petersburg State University of Telecommunications, Saint-Petersburg, 193232, Russia

Article Type

Research Paper

Abstract

We substantiate the need for a new method that can perform measurements in environments with low optical transparency and high viscosity. Based on prior studies and device capabilities, we note that express hydrocarbon monitoring requires instruments with broad capabilities to handle diverse media. We identify challenges that arise when monitoring the condition of fuel and engine oils using refractometric measurements. A new method has been developed to determine the composition of two‑component fuel mixtures (component concentrations) in express monitoring. The design of a refractometer operating on total internal reflection is proposed to implement this method. Various cases can arise when monitoring mixtures of fuels, such as fuel with engine oil or two engine oils. We provide measurement algorithms and reference tables to support implementation of the method. The results of studies of a mixture of two gasoline grades and engine oil with gasoline at different temperatures are discussed and support the method’s validity. Directions for further development and research are outlined.

Keywords

hydrocarbons; mixtures; condition monitoring; refractive index; density; concentration

Recommended Citation

Davydov, Vadim; Davydov, Roman; Isupova, Ekaterina; Linda, Boudjemila; Vezo, Olga; Provodin, Daniil; Roman, Klimenko; and Alexander, Belyaev (2026) "On site refractometric determination of composition and component concentrations in hydrocarbon mixtures," Egyptian Journal of Petroleum: Vol. 35 : Iss. 3 , Article 3.
Available at: https://doi.org/10.62593/2090-2468.1115