title: Determination of naphthalene and total methylnaphthalenes in gasoline using direct injection-mass spectrometry.
abstract: A high-speed determination of naphthalene and total methylnaphthalenes using a non-separative method based on direct injection into the mass spectrometer was performed. The results obtained for total methylnaphthalenes were very similar to those provided with fast gas chromatography-mass spectrometry (GC-MS). However, the non-separative method afforded higher concentrations in the determination of naphthalene than those found when fast GC-MS was used. We propose a correction that removes this error very satisfactorily and allows the same results to be obtained with both methodologies. The non-separative method is rapid, simple and - in view of the results - highly suitable for the determination of naphthalene and total methylnaphthalenes in gasoline samples.
authors.affiliation: Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Ciencias Químicas, Universidad de Salamanca, 37008 Salamanca, Spain.
authors.forename: José Luis Pérez
authors.initials: JL
authors.lastname: Pavón
authors.forename: Miguel Del Nogal
authors.initials: Mdel N
authors.lastname: Sánchez
authors.forename: M A Esther Fernández
authors.initials: MA
authors.lastname: Laespada
authors.forename: Carmelo García
authors.initials: CG
authors.lastname: Pinto
authors.forename: Bernardo Moreno
authors.initials: BM
authors.lastname: Cordero