title: Gas chromatographic-mass spectrometric characterization of all acyclic C5-C7 alkenes from fluid catalytic cracked gasoline using polydimethylsiloxane and squalane stationary phases.
abstract: Published retention indices of acyclic alkenes C5-C7 on squalane and polydimethylsiloxane as stationary phases were investigated, and reliable retention indices of alkenes from various sources were converted to separation systems used in a laboratory. Retention indices measured on available authentic commercial alkenes and on alkenic fraction of gasoline, published retention indices as well as means of GC-MS were used for verification of calculated retention indices. Retention of some gas chromatographic unseparated isomer pairs was obtained by mass spectrometric deconvolution using a specific single-ion monitoring. On the basis of these retention data, C5-C7 alkenes were identified and analyzed in the gasoline from fluid catalytic cracking. In the gasoline all 59 acyclic C5-C7 isomeric alkenes were determined at significantly different concentration levels.
authors.affiliation: Institute of Chemistry, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia. sojak@fns.uniba.sk
authors.forename: Ladislav
authors.initials: L
authors.lastname: Soják
authors.forename: Gabriela
authors.initials: G
authors.lastname: Addová
authors.forename: Róbert
authors.initials: R
authors.lastname: Kubinec
authors.forename: Angelika
authors.initials: A
authors.lastname: Kraus
authors.forename: Gengyuan
authors.initials: G
authors.lastname: Hu
mesh_terms: D000475:Alkenes / Q000737:chemistry*; D002384:Catalysis; D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D005742:Gasoline / Q000032:analysis*; D012828:Silicones / Q000737:chemistry*; D013185:Squalene / Q000031:analogs & derivatives* / Q000737:chemistry*
chemical_list: D000475:Alkenes; D004129:Dimethylpolysiloxanes; D005742:Gasoline; D012828:Silicones; C013830:baysilon; D013185:Squalene; C019556:squalane