title: Single excitation-emission fluorescence spectrum (EEF) for determination of cetane improver in diesel fuel.
abstract: A highly sensitive spectrofluorimetric method has been developed for the determination of 2-ethylhexyl nitrate in diesel fuel. Usually, this compound is used as an additive in order to improve cetane number. The analytical method consists in building the chemometric model as a first step. Then, it is possible to quantify the analyte with only recording a single excitation-emission fluorescence spectrum (EEF), whose data are introduced in the chemometric model above mentioned. Another important characteristic of this method is that the fuel sample was used without any pre-treatment for EEF. This work provides an interest improvement to fluorescence techniques using the rapid and easily applicable EEF approach to analyze such complex matrices. Exploding EEF was the key to a successful determination, obtaining a detection limit of 0.00434% (v/v) and a limit of quantification of 0.01446% (v/v).
authors.affiliation: Laboratorio FIA, INQUISUR - CONICET, Departamento de Química, Universidad Nacional del Sur, Av. Alem 1253, B8000CPB Bahía Blanca, Buenos Aires, Argentina.
authors.forename: Matías
authors.initials: M
authors.lastname: Insausti
authors.affiliation: Laboratorio FIA, INQUISUR - CONICET, Departamento de Química, Universidad Nacional del Sur, Av. Alem 1253, B8000CPB Bahía Blanca, Buenos Aires, Argentina. Electronic address: usband@criba.edu.ar.
authors.forename: Beatriz S
authors.initials: BS
authors.lastname: Fernández Band
mesh_terms: D056804:Biofuels / Q000032:analysis; D005453:Fluorescence; D005742:Gasoline / Q000032:analysis*; D057230:Limit of Detection; D009566:Nitrates / Q000032:analysis*; D013050:Spectrometry, Fluorescence / Q000379:methods
chemical_list: D056804:Biofuels; D005742:Gasoline; D009566:Nitrates; C040121:2-ethylhexyl nitrate
keywords: 2-Ethylhexyl nitrate; Additive; Chemometrics; Diesel/biodiesel blends; Fluorescence