title: Studies into the formation of dioxins in the sintering process used in the iron and steel industry. 1. Characterisation of isomer profiles in particulate and gaseous emissions.
abstract: Dioxin analyses using a DB5MS chromatography column are presented for samples of dust from an electrostatic precipitator and emissions from the main stack of a UK sinter plant. The analyses have been repeated using the SP2331 column, for which the elution order has been determined for the whole range of tetra to octachlorodibenzo-p-dioxins and dibenzofurans, and which provides a larger degree of separation than the DB5MS column. Polychlorinated dibenzofurans are present in significantly larger amounts in both the dust and stack emissions, and are the main contributors to the I-TEQ. Analysis using the SP2331 column for dioxins show considerable similarity to those of Bacher et al. for soot from a wood-burning fire, but differ markedly from those of Addink et al. for simulation of waste incineration. The similarities to Bacher's results are less for the dibenzofurans. Comparison of absolute concentrations with reported vapour pressures shows the retention of significant dioxin in the dust to involve mechanisms other than pure condensation.
authors.affiliation: Department of Engineering Materials, University of Sheffield, Mappin Street, Sheffield S1 3JD, UK.
authors.forename: Tianshu
authors.initials: T
authors.lastname: Wang
authors.forename: David R
authors.initials: DR
authors.lastname: Anderson
authors.forename: Dennis
authors.initials: D
authors.lastname: Thompson
authors.forename: Malcolm
authors.initials: M
authors.lastname: Clench
authors.forename: Ray
authors.initials: R
authors.lastname: Fisher
mesh_terms: D001572:Benzofurans / Q000032:analysis*; D011232:Chemical Precipitation; D000072338:Dibenzofurans, Polychlorinated; D004784:Environmental Monitoring; D008401:Gas Chromatography-Mass Spectrometry; D017745:Incineration; D007221:Industry; D007501:Iron; D008669:Metallurgy; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis*; D012037:Refuse Disposal; D012989:Soil Pollutants / Q000032:analysis*; D013232:Steel
chemical_list: D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D000072317:Polychlorinated Dibenzodioxins; D012989:Soil Pollutants; D013232:Steel; D007501:Iron