title: Convenient dioxin measuring method using an efficient sampling train, an efficient HPLC system and a highly sensitive HRGC/LRMS with a PTV injector.
abstract: An efficient sampling method for dioxins from flue gas, an efficient automatic purification and fractionation method by a new HPLC system using a sulfuric acid-silica/silica column, a Nitro column and a PGC column, and sensitive determination method by an economical HRGC/LRMS using a programmable temperature vaporization (PTV) injector were developed. It was confirmed that the dioxins could be easily collected by the proposed simple sampling train consisting of only two bottles, and the extracted sample could be purified sufficiently and separated as mono-ortho PCBs, non-ortho PCBs and PCDDs/PCDFs completely with the proposed HPLC system. The peak areas of GC/MS were increased linearly with the injection volume up to 40 microl by the PTV technique, and the sensitivity could be increased to 20 times higher than usual. This convenient measuring method can drastically reduce operation time, consumption of hazardous solvent and cost.
authors.affiliation: Laboratory of Safety and Environmental Engineering, Yokohama National University, Japan. k-urano@ynu.ac.jp
authors.forename: K
authors.initials: K
authors.lastname: Urano
authors.forename: M
authors.initials: M
authors.lastname: Kato
authors.forename: Y
authors.initials: Y
authors.lastname: Nagayanagi
authors.forename: Y
authors.initials: Y
authors.lastname: Saito
authors.forename: A
authors.initials: A
authors.lastname: Aono
authors.forename: J
authors.initials: J
authors.lastname: Nagata
authors.forename: H
authors.initials: H
authors.lastname: Syudo
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D001572:Benzofurans / Q000032:analysis; D002849:Chromatography, Gas; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D000072338:Dibenzofurans, Polychlorinated; D004147:Dioxins / Q000032:analysis*; D004785:Environmental Pollutants / Q000032:analysis; D011078:Polychlorinated Biphenyls / Q000032:analysis; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives / Q000032:analysis; D012680:Sensitivity and Specificity; D012989:Soil Pollutants / Q000032:analysis; D013696:Temperature; D014835:Volatilization
chemical_list: D000393:Air Pollutants; D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D004147:Dioxins; D004785:Environmental Pollutants; D000072317:Polychlorinated Dibenzodioxins; D012989:Soil Pollutants; D011078:Polychlorinated Biphenyls