title: Polychlorinated aromatic hydrocarbons in a soil sample measured using gas chromatography/multiphoton ionization/time-of-flight mass spectrometry.
abstract: Gas chromatography/multiphoton ionization/time-of-flight mass spectrometry (GC/MPI/TOF-MS) was applied to a soil sample to survey several groups of polychlorinated aromatic hydrocarbons (polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs), polychlorinated biphenyls (PCBs), polychlorinated naphthalenes (PCNs), polychlorinated diphenylethers (PCDEs), and polychlorinated terphenyls (PCTs)). The signal peaks in the two-dimensional display of GC/MS could be easily and accurately assigned from the intensity distribution of the isotope peaks, even in the presence of numerous interfering species. Using this technology, mutual interferences between organochlorine compounds can be readily recognized from the data of the two-dimensional display after a measurement, although the separation of these compounds is sometimes difficult using high-resolution magnetic-sector-type mass spectrometry. This approach, based on MPI, results in less fragmentation, and is useful for the identification of analytes. Thus, GC/MPI/TOF-MS allows for the simultaneous determination of PCDD/Fs and related compounds in real samples containing numerous interfering species.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan.
authors.forename: Nami
authors.initials: N
authors.lastname: Nakamura
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Uchimura
authors.forename: Yuka
authors.initials: Y
authors.lastname: Watanabe-Ezoe
authors.forename: Totaro
authors.initials: T
authors.lastname: Imasaka
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D012989:Soil Pollutants / Q000737:chemistry*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D012989:Soil Pollutants