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- W2043952578 abstract "Comprehensive two-dimensional gas chromatography, GC × GC, is a new analytical tool with a tremendous capability to separate and identify organic compounds in complex environmental samples. GC × GC uses two different chromatography columns coupled serially by a modulator to produce a volatility by polarity separation and distribute compound peaks across a two-dimensional retention time plane. The two-dimensional separation produces an order of magnitude more resolved peaks than traditional GC methods. The grouping or ordering of the peaks in the GC × GC chromatogram facilitates the identification of unknown compounds and the comparison of complex environmental samples. When a mass spectrometer detector is used, each resolved GC × GC peak yields a single-component, interference-free mass spectrum that leads to accurate matching with mass spectral libraries. GC × GC examination of marine sediment extracts identified a wide variety of chemical contaminants including polychlorinated biphenyls, p -nonylphenol isomers, polycyclic aromatic hydrocarbons, benzotriazoles, and the alkane, cycloalkane, alkylbenzene, alkylnaphthalene, and biomarker fractions of petroleum. The two-dimensional GC × GC chromatogram image permits rapid screening of the sediment extracts for these and other unknown contaminants." @default.
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- W2043952578 date "2002-03-01" @default.
- W2043952578 modified "2023-09-25" @default.
- W2043952578 title "GC×GC—A New Analytical Tool For Environmental Forensics" @default.
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- W2043952578 doi "https://doi.org/10.1006/enfo.2002.0077" @default.
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