Polychlorinated Dibenzodioxins and Polychlorinated Dibenzofurans - PSL1

Environment Canada
Health Canada
1990
ISBN: 0-662-17644-8
Cat. no.: En40-215/1E

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(265K)

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Canadian Environmental Protection Act

Table of Contents

• Summary
• Introduction
• Identity and Properties
• Toxicity Equivalency Factors
• Sources of Environmental Contamination
  • Chemical sources
  • Combustion sources
  • Natural sources
  • Industrial sources
• Environmental Fate and Levels
  • Transport and persistence
  • Levels
• Kinetics and Metabolism
• Toxicology
  • Short-term exposure in mammals
  • Long-term exposure in mammals
  • Fish
  • Birds
• Effects on the Ecosystem
  • Great Lakes
  • WestCoast
• Effects on Humans
  • Dioxins
  • Furans
• Currents Canadian Objectives, Guidelines and Regulations
• Environmental Risk Assessment
• Human Health Risk Assessment
• References

List of Tables

• Table 1 Dioxins and the numbering system used to name them
• Table 2 Furans and the numbering system used to name them
• Table 3 Log octanol-water partition coefficients for selected dioxins
• Table 4 International Toxicity Equivalency Factors
• Table 5 Canadian sales, in tonnes, for dioxin-containing chemicals
• Table 6 Dioxin and furan levels in Canada
• Table 7 Estimates of Canadian intake of dioxins and furans

List of Figures

• Figure 1 Structural formulae of dioxin and furan
• Figure 2 Structural formula for 2,3,7,8-tetrachlorodibenzodioxin

A summary of this report, together with recommendations, has been published in the Canada Gazette Part I. This report is published as required by Section 13 of the Canadian Environmental Protection Act (CEPA).

This report has been prepared for the Ministers of Environment and of National Health and Welfare by the following staff members:

M.J. Boddington (Environment Canada)
A.P. Gilman (Health and Welfare Canada)
R.C. Newhook (Health and Welfare Canada)
B.M. Braune (Environment Canada)
D.J. Hay (Environment Canada)
V. Shantora (Environment Canada)

Any inquires concerning this publication or requests for copies should be directed to either of the following officials:

Director Commercial Chemicals Branch Environment Canada 351 St. Joseph Blvd. Ottawa, Ontario K1A 0H3

Director Bureau of Chemical Hazards Environmental Health Centre Department of National Health & Welfare Tunney's Pasture Ottawa, Ontario K1A 0L2