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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00002703naa a2200361 4500
001oai:DiVA.org:umu-8878
003SwePub
008080219s2001 | |||||||||||000 ||eng|
024a https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-88782 URI
024a https://doi.org/10.1002/mcs.100102 DOI
040 a (SwePub)umu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Harju, Mikaelu Umeå universitet,Kemiska institutionen4 aut
2451 0a Comprehensive two-dimensional gas chromatography (GC x GC) of atropisomeric PCBs, combining a narrow bore beta-cyclodextrin column and a liquid crystal column
264 c 2001
264 1b Wiley,c 2001
338 a print2 rdacarrier
520 a Peak assignment and quantification of PCBs in environmental samples is a time-consuming and costly process, and the analysis of atropisomeric PCBs is even more laborious and costly due to the elaborate analytical work involved. GC X GC can solve some of the problems entailed by increasing congener resolution and instrument sensitivity. In this study. a comprehensive two-dimensional gas chromatography (GC X GC) system was utilized with a combination of a permethylated beta -cyclodextrin column in the first dimension and a liquid crystal column in the second dimension. Using this system, in a single GC X GC run six out of nine studied atropisomeric PCBs (PCBs 91, 132, 135. 136, 149, and 176) can be resolved, and two (PCBs 84 and 174) can be partially separated from coeluting congeners in a mixture of 144 congeners (the most abundant congeners in technical PCBs). The chiral resolution (Rs) of the enantiomeric pairs ranged between 0.6 and 2.0, with PCB 132 having the highest resolution. Furthermore, the congers that (partially) coelute with enantiomers of PCBs 84, 95, and 174 have low abundance in technical PCB as well as in environmental samples. Thus, all of the nine target PCBs could be separated from significant interfering compounds in a single GC X GC run.
653 a polychlorinated biphenyls
653 a PCB
653 a atropisomers
653 a chiral analysis
653 a comprehensive two-dimensional gas chromatography
653 a beta-cyclodextrin
653 a liquid crystal
700a Haglund, Peteru Umeå universitet,Kemiska institutionen4 aut0 (Swepub:umu)peha0004
710a Umeå universitetb Kemiska institutionen4 org
773t Journal of Microcolumn Separationsd : Wileyg 13:7, s. 300-305q 13:7<300-305x 1040-7685x 1520-667X
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-8878
8564 8u https://doi.org/10.1002/mcs.10010

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