title: Extraction and cleanup methods of dioxins in house dust from two cities in Japan using accelerated solvent extraction and a disposable multi-layer silica-gel cartridge.
abstract: A simple and rapid method for the extraction and cleanup of dioxins from house dust was developed using an accelerated solvent extraction (ASE) method and a multi-layer silica-gel cartridge. It was found that the WHO-TEQ levels of dioxins extracted from the house dust obtained by both a conventional soxhlet extraction and the ASE were almost equal, when the data obtained by both methods were compared. As for the cleanup method, a multi-layer silica-gel cartridge yielded higher dioxin recoveries than the alkaline digestion method. The average values of the dioxins in house dust from Kumagaya city and Sendai city in Japan (Sendai city is bigger than Kumagaya city with respect to the population and industry), were 15.6 pg TEQ/g (8.6-26.0 pg TEQ/g, n=5, Kumagaya city) and 16.0 pg TEQ/g (5.9-30.5 pg TEQ/g, n=5, Sendai city), respectively.
authors.affiliation: Dioxin Research Group, Saitama Institute of Public Health, 639-1 Kamiokubo, 338-0824 Saitama, Japan. saitok@interlink.or.jp
authors.forename: Koichi
authors.initials: K
authors.lastname: Saito
authors.forename: Mikiko
authors.initials: M
authors.lastname: Takekuma
authors.forename: Masahiko
authors.initials: M
authors.lastname: Ogawa
authors.forename: Susumu
authors.initials: S
authors.lastname: Kobayashi
authors.forename: Yukio
authors.initials: Y
authors.lastname: Sugawara
authors.forename: Masahiro
authors.initials: M
authors.lastname: Ishizuka
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Nakazawa
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Matsuki
mesh_terms: D016902:Air Pollution, Indoor; D002623:Chemistry Techniques, Analytical / Q000379:methods; D002850:Chromatography, Gel / Q000295:instrumentation / Q000379:methods; D004147:Dioxins / Q000032:analysis* / Q000737:chemistry; D004391:Dust / Q000032:analysis*; D006801:Humans; D007536:Isomerism; D007564:Japan; D012822:Silicon Dioxide / Q000737:chemistry*; D012997:Solvents
chemical_list: D004147:Dioxins; D004391:Dust; D012997:Solvents; D012822:Silicon Dioxide