title: Analysis of alkylbenzene samples by comprehensive capillary liquid chromatography x capillary gas chromatography.
abstract: The constituents in synthetic alkylbenzene samples were analyzed by a comprehensive capillary liquid chromatography (micro-LC) x capillary gas chromatography (CGC). The micro-LC separates the mixture into aliphatic compounds, monosubstituted alkylbenzenes, multisubstituted alkylbenzenes and binuclear aromatic compounds. Each fraction from a single micro-LC injection is stored in turn in a multiloop interface, and then transferred online into CGC sequentially with large volume in-column splitless injection technique for detailed analysis. No sample discrimination was found with this coupling and injection technique. Both the micro-LC column dimension and transfer speed of fraction from interface to CGC were optimized. Quantitative results and the carbon number distribution of each chemical class are obtained by using the comprehensive micro-LC x CGC with flame ionization detection. The reproducibility of peak area is better than 2% RSD.
authors.affiliation: Instrumentation & Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Xu
authors.forename: Hua
authors.initials: H
authors.lastname: Wang
authors.forename: Jinghong
authors.initials: J
authors.lastname: Zhao
authors.forename: Yafeng
authors.initials: Y
authors.lastname: Guan
mesh_terms: D001555:Benzene Derivatives / Q000032:analysis* / Q000302:isolation & purification; D002849:Chromatography, Gas / Q000379:methods*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D009862:Online Systems
chemical_list: D001555:Benzene Derivatives