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Emissions of PBDD/Fs, PCDD/Fs and PBDEs from flame-retarded high-impact polystyrene under thermal stress
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
2015 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 123, 64-70 p.Article in journal (Refereed) Published
Abstract [en]

The emissions of polybrominated diphenyl ethers (PBDEs), polybrominated dibenzo-p-dioxins and dibenzofurans (PBDD/Fs) and their chlorinated analogues (PCDD/Fs) during the thermal treatment of a high impact polystyrene (HIPS) TV casing were investigated. The halogenated compounds were analyzed in the original material and in the gases emitted during its treatment at temperatures between 50 degrees C and 250 degrees C. DecaBDE was the primary PBDE in the TV casing, which also contained high levels of PBDFs (ppm range). At the lower treatment temperatures, non-modified PBDEs evaporated from the samples. Conversely, at 200 degrees C or above, debromination reactions led to the formation of additional tri- through nonaBDE. The formation of new PBDD/Fs was also detected in the gas phase when the plastic was heated to 200 degrees C or 250 degrees C, with higher yields of furans than dioxins. This appreciably increased the toxic equivalent (TEQ) levels of the gas phase relative to those seen in the untreated sample. In all cases, the levels and TEQ contributions from PCDD/Fs were negligible compared to those for brominated analogues. (C) 2014 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2015. Vol. 123, 64-70 p.
Keyword [en]
Thermal transformation, HIPS, BFRs, PBDEs, PBDD/Fs, PCDD/Fs
National Category
Other Earth and Related Environmental Sciences Polymer Chemistry
Identifiers
URN: urn:nbn:se:umu:diva-100749DOI: 10.1016/j.chemosphere.2014.10.085ISI: 000349271800009PubMedID: 25550110OAI: oai:DiVA.org:umu-100749DiVA: diva2:807940
Available from: 2015-04-26 Created: 2015-03-09 Last updated: 2017-12-04Bibliographically approved

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Lundstedt, StaffanLundin, Lisa

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