TAILIEUCHUNG - BROMINATED AND CHLORINATED ORGANIC CHEMICAL COMPOUNDS USED AS FLAME RETARDANTS

Hexabromobenzene (HBB) has been used as a flame retardant in polymers, plastics, textiles, wood and paper. Its primary uses have been reported in the plastics, paper and electrical industries (Bruchajzer et al., 2004). . production/import volume was listed as 10,000- 500,000 pounds for 1998, but no information is available beyond that time (. EPA, 2002). In addition to its use as a flame retardant, HBB is a thermal decomposition product of octa- and decaBDEs and hexabromobiphenyl (as cited in Bruchajzer et al., 2004). HBB was identified in scrap material in an aluminum recycling plant in Finland (Sinkkonen. | BROMINATED AND CHLORINATED ORGANIC CHEMICAL COMPOUNDS USED AS FLAME RETARDANTS Additional Information on Four Flame Retardants Materials for the March 2-3 2009 Meeting of the California Environmental Contaminant Biomonitoring Program CECBP Scientific Guidance Panel SGP For the December 4-5 2008 SGP meeting CECBP staff provided materials on brominated and chlorinated chemical compounds used as brominated flame retardants BFRs and chlorinated flame retardants CFRs . The December 2008 document contained overviews of 13 flame retardants available at http multimedia biomon pdf . In addition to these 13 chemicals a list of some other BFRs and CFRs was included on page 32 of the document. The material that follows expands on the earlier document by providing overviews of four additional flame retardants from that list. March 2-3 2009 SGP Meeting CECBP 1 2 3-Dibromopropyl-2 4 6-tribromophenyl ether CAS No. 35109-60-5 Use and extent of exposure 2 3-Dibromopropyl-2 4 6-tribromophenyl ether DPTE has reported use as a flame retardant in extrusion grade polypropylene ICPS 1997 . No information was identified as to whether DPTE is used as an additive or reactive flame retardant Fisk et al. 2003 . No information was found on the . production import volume. A 1997 article reported findings of DPTE in sewer slimes in Germany as reported in NIEHS 2002 . Recently DPTE was identified as the predominant organic bromine compound in blubber and brain samples of hooded seals and harp seals from the Barents and Greenland Seas. Levels in blubber and brain samples were as high as 470 and 340 pg kg wet weight respectively Von der Recke and Vetter 2007 . Known or suspected health effects DPTE contains substructures similar to both 2 3 -dibromo-1-propanol and 2 4 6-tribromophenol. 2 3-Dibromo-1-propanol is listed under Proposition 65 as known to cause cancer. Research findings indicate that 2 4 6-tribromophenol is a thyroid hormone disrupting chemical Hamers .

• Hoá dầu
• Phytoremediation
• Biofortification and Nanoparticles
• Absorption
• Transport and Control Mechanisms
• Defence Strategies
• Annual Plants
• Cơ chế làm sạch môi trường nước
• Làm sạch môi trường nước bằng thực vật
• Làm sạch môi trường nước
• Ứng dụng của phytoremediation
• Giới hạn của phytoremediation
• Phương pháp phytoremediation
• Phytoremediation of contaminated soils
• Contaminated soils
• Plant leaves
• Transformation of organic contaminants
• Phytoremediation includes phytotransformation
• công nghệ thực vật PHYTOREMEDIATION
• xử lý môi trường
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• THỰC VẬT CẢI TẠO MÔI TRƯỜNG PHYTOREMEDIATION
• bài giảng sinh học
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• sinh thái nông nghiệp
• Textile effluent
• Promoting bacillus spp
• Paenibacillus Alvei
• Sesuvium Portulacastrum
• Phytoremediation of salt affected soils
• Công nghệ môi trường
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• Total petroleum hydrocarbons
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• Ceratophyllum demersum Lab work
• Phytoremediation of lead
• Lab aqueous ecosystem
• Resource Competition
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• Abiotic Stress
• Mineral Nutrition
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• Nanoparticles
• Plant Antioxidative