Pyrolysis and GC/MS-analysis of brominated flame retardants in on-line operation |
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| Institution: | 1. School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China;2. South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China;3. College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China;4. College of Life and Environmental Sciences, Wenzhou University, Wenzhou, 325035, China;5. The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China;6. Guangdong Provincial Key Lab of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510006, China;1. Middle East Technical University, Dept. Polymer Sci. & Technol., TR-06800 Ankara, Turkey;2. Middle East Technical University, Dept. Metallurgical and Materials Eng., TR-06531 Ankara, Turkey;3. Middle East Technical University, Dept. Chem., TR-06800 Ankara, Turkey;1. Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Box 7050, SE-75007, Uppsala, Sweden;2. Geological Survey of Sweden, Box 670, 75128, Uppsala, Sweden;1. Graduate School of Environmental Studies, Tohoku University, Aramaki Aza Aoba 6-6-07 Aoba-ku, Sendai 980-8579, Japan;2. Bio-Fuels Division (BFD), CSIR-Indian Institute of Petroleum (IIP), Council of Scientific and Industrial Research (CSIR), Dehradun 248005, India |
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| Abstract: | Flame retardants such as brominated diphenyl ethers (Bromkal 70-5-DE, FR 300 BA), 2,4,6-tribromophenol, pentabromophenol and hexabromobiphenyl were pyrolyzed at 600°C, 700°C, 800°C and 900°C in absence of oxygen in a SGE pyrojector, and the residues were analyzed by means of GC/MS in on-line operation. The pyrolysis of Bromkal 70-5-DE hereby yielded bromobenzenes (PBBz), bromophenols (PBP) and brominated dibenzofurans (PBDF). PBBz, bromonaphthalenes (PBN) and PBDF could be detected in the FR 300 BA pyrolysate, whereas brominated benzenes and dibenzodioxins formed during the pyrolysis of 2,4,6-tribromophenol. Unlike the pyrolysis of 2,4,6-tribromophenol, pentabromophenol pyrolysis produced mainly bromobenzenes along with traces of bromonaphthalenes, bromodioxins and bromodiphenyl ethers. The pyrogram of hexabromobiphenyl showed bromobenzenes and brominated biphenyls as key pyrolysate components. |
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