Persistent Organic Pollutants (POPs) and Persistent, Bioaccumulative and Toxic Substances (PBTs)

Some substances have the tendency to persist in the environment and bioaccumulate in the foodchain and therefore have the potential to cause harm to the humans and other organisms.


Workshop Summaries

SETAC Pellston Workshop® (2008): Science-Based Guidance and Framework for the Evaluation and Identification of PBTs and POPs

SETAC Pellston Workshop® (1999): Evaluation of Persistence and Long-Range Transport of Organic Chemicals in the Environment

SETAC Seminars 

Evolution of the Science Associated with Understanding and Identifying Persistent Bioaccumulative and Toxic (PBT) and Persistent Organic Pollutant (POP) Assessments. View presentations:

  • Side event to the Stockholm Convention of the Parties (2017)
  • Seminar at the Persistent Organic Pollutants Review Committee (2017)


To address the global concern over POPs and PBTs, about 90 countries have signed a groundbreaking United Nations treaty known as the Stockholm Convention. SETAC has observer status with the convention and regularly supports by organizing scientific symposia to bring the latest science to the regulatory community. 

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