Imaginary optical constants in near-infrared (NIR) spectral range for the separation and discrimination of adulterated diesel oil binary mixtures

• DOI: 10.1007/s10043-018-0481-9
• Publication Date: 2018-12-11T00:21:18Z
• Authors: Boniphace Kanyathare; Benjamin Asamoah; Kai-Erik Peiponen
• Keywords: Kerosene; Refractometer; Molar absorptivity; Optical conductivity

Fuel adulteration is a major factor contributing to environmental pollution. The tendency adulterate diesel oil with kerosene becoming prevalent in many countries, which particularly driven by the lower cost of than oil. objective this study develop method separating and discriminating between different compositions binary liquid fuel mixtures. In study, we have utilized refractive indices mixtures measured using an Abbe refractometer, inversion transmittance spectra visible near-infrared (NIR) spectral range general based on Kramers–Kronig dispersion analysis, where singly subtractive relations been used obtain wavelength-dependent imaginary excess permittivity mixture. has considerable importance interpretation molecule interactions It herein demonstrated that problematic cases relatively low adulterations 5% 10% can be detected distinguished from 15% optical properties NIR range. We show constants such as extinction coefficient are useful for not only screening adulteration, but also high Moreover, these quantities exploited development practical sensors, especially sensing under field conditions.