title: [Study on the pollution status of PCDD/Fs and PCBs in sludge and crucian from typical polluted areas of Zhejiang Province].
abstract: OBJECTIVE
  To reveal the pollution status of PCDD/Fs and PCBs in sludge and crucian from typical polluted areas of Zhejiang Province.
  
  
  METHODS
  After having been spiked the 13C-labeled surrogate internal standards, the extracts were purified by a series of columns like GPC, multiple silica columns and alumina columns, and then analyzed hy HRGC-HRMS.
  
  
  RESULTS
  Concentration ranges of dioxins and PCBs in sludge and Crusians from five areas were 379.6-9811.6 pg/g dry weight, 10,000-762,433 pg/g dry weight and 0.084-12.l68 pg/g wet weight, 149.03-57,304 pg/g wet weight, respectively. Ranges of total WHO-TEQ in sludge and crucians are 11.2-2162 pg/g dry weight and 0.234-39.251 pg/g wet weight.
  
  
  CONCLUSIONS
  A wide variety of concentrations of dioxins and PCBs in sludge and crusians from five areas were detected, especially for that of Luqiao. For the pollution status of Luqiao, effluents of E--waste recycling industries maybe are the main sources of PCB exposure. The environment is now heavily threatened by such pollutants.
authors.affiliation: College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China.
authors.forename: Jianlong
authors.initials: J
authors.lastname: Han
authors.forename: Haitao
authors.initials: H
authors.lastname: Shen
authors.forename: Baifen
authors.initials: B
authors.lastname: Huang
authors.forename: Guoliang
authors.initials: G
authors.lastname: Song
mesh_terms: D000818:Animals; D002347:Carps; D002681:China; D004785:Environmental Pollutants / Q000032:analysis*; D005506:Food Contamination / Q000032:analysis*; D019015:Geologic Sediments / Q000032:analysis; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis; D012722:Sewage / Q000032:analysis
chemical_list: D004785:Environmental Pollutants; D000072317:Polychlorinated Dibenzodioxins; D012722:Sewage; D011078:Polychlorinated Biphenyls