TY - CHAP U1 - Konferenzveröffentlichung A1 - Ortega Clavero, Valentin A1 - Weber, Andreas A1 - Schröder, Werner A1 - Curticapean, Dan T1 - Potential use of the characteristic Raman lines of toluene (C7H8 ) as a reference on the spectral analysis of fuel blends T2 - Proceedings of SPIE: Optical Measurement Systems for Industrial Inspection IX N2 - We report the use of the Raman spectral information of the chemical compound toluene C7H8 as a reference on the analysis of laboratory-prepared and commercially acquired gasoline-ethanol blends. The rate behavior of the characteristic Raman lines of toluene and gasoline has enabled the approximated quantification of this additive in commercial gasoline-ethanol mixtures. This rate behavior has been obtained from the Raman spectra of gasoline-ethanol blends with different proportions of toluene. All these Raman spectra have been collected by using a self-designed, frequency precise and low-cost Fourier-transform Raman spectrometer (FT-Raman spectrometer) prototype. This FT-Raman prototype has helped to accurately confirm the frequency position of the main characteristic Raman lines of toluene present on the different gasoline-ethanol samples analyzed at smaller proportions than those commonly found in commercial gasoline-ethanol blends. The frequency accuracy validation has been performed by analyzing the same set of toluene samples with two additional state-of-the-art commercial FT-Raman devices. Additionally, the spectral information has been contrasted, with highly-correlated coefficients as a result, with the values of the standard Raman spectrum of toluene. KW - Raman-Spektroskopie KW - Spektralanalyse Y1 - 2015 SN - 0277-786X SS - 0277-786X SN - 9781628416855 SB - 9781628416855 U6 - https://doi.org/10.1117/12.2185100 DO - https://doi.org/10.1117/12.2185100 VL - 9525 SP - 95254G-1 EP - 95254G-7 PB - SPIE CY - Bellingham, Washington ER -