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Selecting chemical substances for the UN-ECE POP protocol.

D Lerche1, E van de Plassche, A Schwegler

  • 1Ministry of Housing, Spatial Planning and the Environment, Directorate-General for Environmental Protection, The Hague, The Netherlands.

Chemosphere
|June 6, 2002
PubMed
Summary

This study identifies four new persistent organic pollutants (POPs) for potential inclusion in the UN-ECE POP Protocol. Risk profiles were drafted for polychlorinated naphthalenes, dicofol, hexachlorobutadiene, and pentachlorobenzene.

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Area of Science:

  • Environmental Science
  • Environmental Chemistry
  • Toxicology

Background:

  • The 1998 UN-ECE POP Protocol addresses persistent, bioaccumulating, and toxic organic substances.
  • These substances are characterized by their potential for long-range atmospheric transport.
  • The Dutch Ministry initiated a project to identify additional candidate POPs.

Purpose of the Study:

  • To select potential candidate substances for the UN-ECE POP Protocol.
  • To draft preliminary risk profiles for selected candidate POPs.
  • To inform the UN-ECE LRTAP Ad hoc Expert Group on POPs for future protocol amendments.

Main Methods:

  • Utilized the 'PTB-database' to screen substances against protocol criteria.
  • Applied established criteria for persistence, bioaccumulation, and toxicity.

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  • Conducted a preliminary risk assessment for identified candidate substances.

    • Main Results:

    • Twelve substances met the initial screening criteria.
    • Four substances were selected for detailed risk profiling: polychlorinated naphthalenes, dicofol, hexachlorobutadiene, and pentachlorobenzene.
    • Preliminary risk profiles for these four substances have been drafted.

    Conclusions:

    • The identified substances are strong candidates for future inclusion in the UN-ECE POP Protocol.
    • The drafted risk profiles will be revised for the expert group.
    • This process aims to expand the list of regulated POPs under the protocol.