title: Enhanced comprehensive two-dimensional gas chromatographic resolution of polychlorinated biphenyls on a non-polar polysiloxane and an ionic liquid column series.
abstract: A total of 196 out of 209 polychlorobiphenyl (PCB) congeners were resolved using GC×GC-TOFMS with a non-polar/ionic liquid column series consisting of poly(50%-n-octyl-50%-methyl)siloxane and (1,12-di(tripropylphosphonium)dodecane bis(trifluoromethansulfonyl)amide) in the first and second dimension, respectively. It has been found that 13 PCB congeners overlap in five doublets (CB12+CB13, CB62+CB75, CB70+CB76, CB97+CB125 and CB153+CB168) and one triplet (CB90+CB101+CB113). All toxic, "dioxin like" congeners were separated with no interferences from any PCB congener. The 109 PCBs present in Aroclor 1242 and the 82 PCBs present in Aroclor 1260 were resolved GC×GC-TOFMS analysis on this column set.
authors.affiliation: Department of Analytical Chemistry, Faculty of Science, Palacky University, Olomouc, Czech Republic.
authors.forename: Michal
authors.initials: M
authors.lastname: Zapadlo
authors.forename: Ján
authors.initials: J
authors.lastname: Krupčík
authors.forename: Tomáš
authors.initials: T
authors.lastname: Kovalczuk
authors.forename: Pavel
authors.initials: P
authors.lastname: Májek
authors.forename: Ivan
authors.initials: I
authors.lastname: Spánik
authors.forename: Daniel W
authors.initials: DW
authors.lastname: Armstrong
authors.forename: Pat
authors.initials: P
authors.lastname: Sandra
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D052578:Ionic Liquids / Q000737:chemistry*; D011078:Polychlorinated Biphenyls / Q000737:chemistry / Q000302:isolation & purification*; D012833:Siloxanes / Q000737:chemistry*
chemical_list: D052578:Ionic Liquids; D012833:Siloxanes; D011078:Polychlorinated Biphenyls