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Occurrence of brominated dioxins in a study using various firefighting methods
Örebro University, School of Science and Technology. (MTM Research Centre)
Örebro University, School of Science and Technology.
Department of Occupational and Environmental Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Örebro University, School of Science and Technology. Department of Occupational and Environmental Medicine Faculty of Medicine and Health, Örebro University, Örebro, Sweden.ORCID iD: 0000-0003-4128-8226
2017 (English)In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 599-600, 1213-1221 p.Article in journal (Refereed) Published
Abstract [en]

The use of different firefighting methods influences how fast a fire is extinguished and how fast the temperature drops in the area affected by the fire. These differences may also influence the formation of harmful pollutants during firefighting of an accidental fire. The aim was to study occurrence of brominated dibenzo-p-dioxins and furans (PBDD/Fs) in gas and soot during five fire scenarios resembling a small apartment fire and where different firefighting methods were used. Samples of gas and soot were taken both during the buildup of the fire and during the subsequent extinguishing of the fire while using different firefighting methods (nozzle, compressed air foam system, cutting extinguisher) and an extinguishing additive. New containers equipped with identical sets of combustible material were used for the five tests. The use of different firefighting methods and extinguishing additive induced variations in concentration and congener profiles of detected PBDD/Fs. The concentration range of Sigma PBDD/Fs in gas was 4020-18,700 pg/m(3), and in soot 76-4092 pg/m(2). PBDFs were the predominant congeners and 1,2,3,4,6,7,8-HpBDF was the most abundant congener. Chlorinated dibenzo-p-dioxins and furans (PCDD/Fs) were also monitored. The PBDD/Fs contributed with in average 97% to the total (PCDD/Fs plus PBDD/Fs) toxic equivalents, in soot and gas. During extinguishing, the shorter time the temperature was around 300 degrees C, the lower occurrence of PBDD/Fs. In the study the firefighting methods showed a difference in how effectively they induced a temperature decrease below 300 degrees C in the fire zone during quenching, where cutting extinguishing using additive and the compressed air foam system showed the fastest drop in temperature.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 599-600, 1213-1221 p.
Keyword [en]
PBDD/F, PCDD/F, Fire, Cutting extinguisher, Foam, Additive, Nozzle, Formation
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
URN: urn:nbn:se:oru:diva-59123DOI: 10.1016/j.scitotenv.2017.05.087ISI: 000405253500018PubMedID: 28514839Scopus ID: 2-s2.0-85019068316OAI: oai:DiVA.org:oru-59123DiVA: diva2:1135202
Funder
Swedish Civil Contingencies Agency
Available from: 2017-08-22 Created: 2017-08-22 Last updated: 2017-10-12Bibliographically approved

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Bjurlid, FilipKärrman, AnnaHagberg, Jessika
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