title: An occupational exposure assessment of polychlorinated dibenzo-p-dioxin and dibenzofurans in firefighters.
abstract: Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) are unintentional byproducts of combustion and industrial processes. Firefighters face the risk of occupational exposure to PCDD/Fs. Congener-specific analyses of 17 PCDD/Fs were performed on 20 serum samples collected from firefighters and fire scene investigators, and four soot samples that had deposited on the surfaces of the fire helmets and were collected after the firefighters had fought fires. The PCDD/F concentrations on the helmets that were contaminated by being worn at the fire scenes were 63-285 times higher than those on a clean helmet. The median serum PCDD/F concentration of the 16 firefighters (12 pg WHO(2005)-TEQ g(-1)lipid) was not different from those of the males from the general Taiwanese population (9.4 pg WHO(2005)-TEQ g(-1) lipid). However, the median PCDD/F level in the four fire scene investigators (15 pg WHO(2005)-TEQ g(-1) lipid) was higher than those in the male from the general Taiwanese population (Mann-Whitney U test, p<0.01). Furthermore, the serum samples from the firefighters and fire scene investigators, and the soot samples from the fire scenes presented similarly distinctive PCDD/F profiles that had elevated proportions for 10 PCDF congeners. Limited data indicated that the fire scene investigators were occupationally exposed to PCDD/Fs at the fire scenes. We suggested that the firefighters were not occupationally exposed to PCDD/Fs at the fire scenes due to appropriate protection. However, the fire scene investigators may have had more occupational exposure to PCDD/Fs due to poor protection, and further research must be performed to confirm this.
authors: Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan.
authors: Jing-Fang
authors: JF
authors: Hsu
authors: How-Ran
authors: HR
authors: Guo
authors: Hsueh Wen
authors: HW
authors: Wang
authors: Chin-Kun
authors: CK
authors: Liao
authors: Pao-Chi
authors: PC
authors: Liao
mesh_terms: D000328:Adult; D000393:Air Pollutants / Q000032:analysis* / Q000097:blood; D001572:Benzofurans / Q000032:analysis* / Q000097:blood; D000072338:Dibenzofurans, Polychlorinated; D004784:Environmental Monitoring; D005390:Fires / Q000517:prevention & control*; D006801:Humans; D019570:Inhalation Exposure / Q000032:analysis / Q000706:statistics & numerical data; D008297:Male; D008875:Middle Aged; D016273:Occupational Exposure / Q000032:analysis* / Q000706:statistics & numerical data; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis / Q000097:blood; D011481:Protective Clothing
chemical_list: D000393:Air Pollutants; D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D000072317:Polychlorinated Dibenzodioxins