Abstract
The Agency for Toxic Substances and Disease Registry (ATSDR) conducted biological testing to assess dioxin exposure in residents of a community who lived in an area with heavy chemical industry. Dioxin concentrations were measured in blood serum samples from 28 adult residents of the community. Fourteen of those tested had blood dioxin concentrations that exceeded the 95th percentile prediction level of an age-matched comparison population. Specific congener analyses indicated that the elevated dioxin concentrations were primarily due to high concentrations of 2,3,7,8 tetrachlorodibenzo-p-dioxin (TCDD), 1,2,3,7,8 pentachlorodibenzo-p-dioxin (PeCDD), and hexachlorodibenzo-p-dioxins (HxCDs). Principal components analysis (PCA) indicated that the profiles of dioxin congeners were different in people with elevated blood dioxin concentrations compared to those with background concentrations. Elevated blood dioxin concentrations were detected only in older members of the population, which suggests that dioxin exposures were higher in the past. The sources of the dioxin exposure have not been identified.
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Acknowledgements
The authors thank Dr. Richard A. Canady for developing the dioxin comparison values cited in this report. The authors also thank the residents of the community for their generous assistance and participation in this investigation.
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ORLOFF, K., HEWITT, D., METCALF, S. et al. Dioxin exposure in a residential community. J Expo Sci Environ Epidemiol 11, 352–358 (2001). https://doi.org/10.1038/sj.jea.7500175
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DOI: https://doi.org/10.1038/sj.jea.7500175
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