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Assessing Bioaccumulation Factors of Persistent Organic Pollutants in Aquatic Food-Chains

  • Frank A P C Gobas

Abstract

As part of the Toxic Substances Management Policy (TSMP) under the revised, but not yet promulgated, Canadian Environmental Protection Act in Canada, the Waste Minimization Prioritization process of the USEPA and the Long-Range Transboundary Air Pollution (LRTAP) Protocol on Persistent Organic Pollutants (POPs) of the United Nations Environment Program, large numbers of chemical substances (e.g. approximately 22,500 chemicals used or imported in Canada that are currently on Canada’s Domestic Substances List) are to be evaluated for their potential impact on the environment. This evaluation process involves the assessment of the toxicity, bioaccumulation and persistence of the chemical and a comparison of the assessed values to a set of standard criteria. The bioaccumulation criteria identified in the TSMP state that if the Bioconcentration Factor (BCF) or Bioaccumulation Factor (BAF) exceeds 5,000 or the logarithm of the octanol-water partition coefficient (log Kow) of the chemical substance exceeds 5, the bioaccumulation criterion is exceeded. If the criteria for bioaccumulation, inherent toxicity and persistence are all exceeded, man-made chemical substances are being further evaluated in a screening level risk assessment with the purpose to consider the chemical substance for virtual elimination.

Keywords

Chemical Substance Persistent Organic Pollutant Chemical Concentration Bioconcentration Factor Bioaccumulation Factor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  • Frank A P C Gobas

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