title: [Levels of polychlorinated dibenzo-p-dioxins and dibenzofurans in fish from Shenzhen over the past decade].
abstract: OBJECTIVE
  To analyze the contamination levels and profiles of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in fish samples in Shenzhen areas of China, and to reveal the status of PCDD/Fs pollution for fish samples in a decade.
  
  
  METHODS
  The fish samples including freshwater and saltwater fishes, were collected and analyzed from 2004 to 2013, and PCDD/Fs were detected by isotope dilution HRGC/HRMS using multiple ion detection mode (MID), which was an advanced and authority technique referenced US EPA1613 method.
  
  
  RESULTS
  The average concentration of PCDD/Fs in fish was 0.90 pg/(g wet weight), and the average total toxicity equivalency factor (TEQ) calculated on the basis of the toxic equivalency factor (TEF) published by the World Health Organization (WHO) in 2005 was 0.088 pg WHO-TEQ/(g, wet weight). PCDD/Fs levels in fishes varied widely depending on the species. The PCDD/Fs average contamination levels of fish in 10 years did not exceeded the limit standards of European Commission. The evaluation dietary intake of PCDD/Fs from fish for local residents was 4.80 pg WHO-TEQ/(kg · BW · m).
  
  
  CONCLUSIONS
  The PCDD/Fs levels in fish in a decade was less than the maximum limit standards set by European Commission 2011.
authors.forename: Xiangying
authors.initials: X
authors.lastname: Chen
authors.forename: Jianqing
authors.initials: J
authors.lastname: Zhang
authors.forename: Yousheng
authors.initials: Y
authors.lastname: Jiang
authors.lastname: Zhou Jian
authors.forename: Shengnong
authors.initials: S
authors.lastname: Li
mesh_terms: D000818:Animals; D001572:Benzofurans / Q000032:analysis* / Q000737:chemistry; D001681:Biological Assay / Q000379:methods; D002681:China; D000072338:Dibenzofurans, Polychlorinated; D004147:Dioxins / Q000032:analysis* / Q000737:chemistry; D004784:Environmental Monitoring; D004787:Environmental Pollution; D005399:Fishes; D005504:Food Analysis; D005618:Fresh Water; D015596:Nutrition Assessment; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism
chemical_list: D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D004147:Dioxins; D014874:Water Pollutants, Chemical; C023614:dibenzofuran; C020887:dibenzo(1,4)dioxin