title: Rapid screening method for determination of PCDDs and PCDFs in fly ashes using GC-ion trap MS/MS based on cellular disruptor extraction.
abstract: Identification and quantification of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans in fly ashes from incinerator was carried out using capillary gas chromatography/tandem mass spectrometry (GC/MS/MS) with a low resolution ion trap mass spectrometer. Sample extraction was carried out in a cellular disruptor, in Soxhlet and in a conventional ultrasound for comparative purposes. Extraction with cellular disruptor was shown to be comparable to that obtained by the reference Soxhlet extraction, while low recoveries were observed with ultrasound. Hospital incinerator ashes, extracted by cellular disruptor and Soxhlet presented I-TEQ values for polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans of 370 +/- 81 ng g(-1) and 533 +/- 55 ng g(-1), respectively, statistically equivalent according to the t-test.
authors.affiliation: Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS, Brazil.
authors.forename: Rafael M
authors.initials: RM
authors.lastname: Lattuada
authors.forename: Tania Mara
authors.initials: TM
authors.lastname: Pizzolato
authors.forename: João Henrique Z Dos
authors.initials: JH
authors.lastname: Santos
authors.forename: Maria do Carmo Ruaro
authors.initials: Mdo C
authors.lastname: Peralba
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D001572:Benzofurans / Q000032:analysis*; D002244:Carbon / Q000032:analysis*; D060729:Coal Ash; D000072338:Dibenzofurans, Polychlorinated; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D017745:Incineration; D007220:Industrial Waste; D052638:Particulate Matter; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis; D014465:Ultrasonics
chemical_list: D000393:Air Pollutants; D001572:Benzofurans; D060729:Coal Ash; D000072338:Dibenzofurans, Polychlorinated; D007220:Industrial Waste; D052638:Particulate Matter; D000072317:Polychlorinated Dibenzodioxins; D002244:Carbon