Gas chromatographic-mass spectrometric characterization of all acyclic C5-C7 alkenes from fluid catalytic cracked gasoline using polydimethylsiloxane and squalane stationary phases.
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.
Soják
Ladislav
L
Institute of Chemistry, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia. sojak@fns.uniba.sk
Addová
Gabriela
G
Kubinec
Róbert
R
Kraus
Angelika
A
Hu
Gengyuan
G
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*
D000475:Alkenes; D004129:Dimethylpolysiloxanes; D005742:Gasoline; D012828:Silicones; C013830:baysilon; D013185:Squalene; C019556:squalane