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[Origin, structure and distribution of dioxins].

H Fiedler1

  • 1UNEP Chemicals, Châtelaine (GE), Schweiz. hfiedler@unep.ch

DTW. Deutsche Tierarztliche Wochenschrift
|September 8, 2006
PubMed
Summary

Polychlorinated dibenzo-para-dioxins (PCDD) and dibenzofurans (PCDF) are toxic pollutants. Industrial processes and open burning are major sources, necessitating global monitoring under the Stockholm Convention.

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Emissions of PCDD and PCDF from combustion of forest fuels and sugarcane: a comparison between field measurements and simulations in a laboratory burn facility.

Chemosphere·2011

Area of Science:

  • Environmental Chemistry
  • Toxicology
  • Industrial Processes

Context:

  • PCDD/PCDF are unintentional by-products of thermal and chemical processes.
  • Biogenic formation is known but not a major contributor to inventories.
  • These persistent, semi-volatile, and toxic pollutants pose global environmental challenges.

Purpose:

  • To highlight the global environmental problem of PCDD/PCDF.
  • To inform about international efforts, including the Stockholm Convention, for reduction and elimination.
  • To present findings on changing dioxin source profiles in industrialized versus developing countries.

Summary:

  • Industrial processes, particularly metallurgy, are now major sources in industrialized nations, surpassing municipal waste incineration.
  • Open burning (forest fires, agricultural residue burning, waste dumps) remains the primary source in developing countries.
  • Global environmental monitoring programs are being initiated under the Stockholm Convention.

Impact:

  • Informing policy decisions for dioxin emission reduction strategies.
  • Guiding the development of national and regional dioxin inventories.
  • Facilitating international cooperation for managing persistent organic pollutants.

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