title: [Total dietary exposure assessment of emerging brominated flame retardants in Beijing].
abstract: OBJECTIVE
  To estimate the exposure characteristic of six emerging brominated flame retardant for Beijing residents by dietary intake.
  
  
  METHODS
  2,3,5,6-tetrabromo-p-xylene (pTBX), pentabromotoluene (PBT), 1, 2, 3, 4, 5-pentabromo-6- ethylbenzene (PBEB), hexahromobenzene (HBB), hexachlorocyclopentadienyl- dibromocyclooctane (DBHCTD) and 1,2-bis(2 ,4 ,6-tribromo phenoxy) ethane (BTBPE) were detected by atmospheric pressure gas chromatography tandem mass spectrometry (APGC-MS/MS) in total dietary samples from Beijing. Dietary intake assessments of human exposure were carried out according to results of determination.
  
  
  RESULTS
  PBT, PBEB, HBB and BTBPE were occurred with concentration between 1.2-29.4 pg/g wet weight. The detection rates of HBB and BTBPE in animal--origin samples were higher than those in plant-origin samples, and there were significant differences (P < 0.05). The exposure level of Beijing residents to six emerging brominated flame retardants were 296.8 pg/(kg-d).
  
  
  CONCLUSIONS
  The exposure level of emerging brominated flame retardants by dietary intake in Beijing is relatively low, and meat is the main source of BTBPE dietary intake.
authors.forename: Surong
authors.initials: S
authors.lastname: Lü
authors.forename: Yumin
authors.initials: Y
authors.lastname: Niu
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.forename: Bing
authors.initials: B
authors.lastname: Shao
authors.forename: Zhenxia
authors.initials: Z
authors.lastname: Du
mesh_terms: D000818:Animals; D000068476:Beijing; D001969:Bromobenzenes / Q000032:analysis; D004032:Diet; D004781:Environmental Exposure; D005411:Flame Retardants / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D053719:Tandem Mass Spectrometry; D014050:Toluene / Q000031:analogs & derivatives / Q000032:analysis; D014992:Xylenes / Q000032:analysis
chemical_list: D001969:Bromobenzenes; D005411:Flame Retardants; D014992:Xylenes; D014050:Toluene; C031286:4-xylene; C053745:2,3,4,5,6-pentabromotoluene