Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9748827 | Journal of Chromatography A | 2005 | 12 Pages |
Abstract
Comprehensive two-dimensional gas chromatography with electron-capture negative ionization time-of-flight mass spectrometry (GCÂ ÃÂ GC-ECNI-TOF-MS) is used to study the composition and characteristics of short-, medium- and long-chain polychlorinated n-alkane (PCA) mixtures. Distinct ordered structures, which enable the highlighting and interpretation of group and sub-group separations are observed when using a DB-1Â ÃÂ 007-65HT column combination. The analysis of a number of, mutually rather different, technical mixtures and 35 individual standard compounds provides information on the role of chlorine substitution (number of substituents as well as their position), the contribution of carbon versus chlorine atoms to analyte volatility, i.e. GCÂ ÃÂ GC behaviour, and the influence of the chain length of the carbon skeleton. Two dust samples are analyzed to illustrate the practical usefulness of the proposed procedure.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
P. Korytár, J. Parera, P.E.G. Leonards, F.J. Santos, J. de Boer, U.A.Th. Brinkman,