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Modelling PCB bioaccumulation in a Baltic food web
Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
2007 (English)In: Environmental Pollution, ISSN 0269-7491, Vol. 148, 73-82 p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2007. Vol. 148, 73-82 p.
Keyword [en]
Environmental science
Identifiers
URN: urn:nbn:se:su:diva-10247DOI: 10.1016/j.envpol.2006.11.033ISI: 000246978900008OAI: oai:DiVA.org:su-10247DiVA: diva2:176766
Available from: 2007-12-23 Created: 2007-12-23 Last updated: 2009-03-26Bibliographically approved
In thesis
1. Tools for Evaluating the Fate and Bioaccumulation of Organic Compounds in Aquatic Ecosystems
Open this publication in new window or tab >>Tools for Evaluating the Fate and Bioaccumulation of Organic Compounds in Aquatic Ecosystems
2009 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The bioaccumulation of organic contaminants in aquatic ecosystems has been a key focus in environmental toxicology over the last decades. Bioaccumulation is a key concept in ecological risk assessments since it controls the internal dose of potential environmental contaminants. Information on the bioaccumulation of contaminants is used by regulatory authorities in the development of water quality standards, categorizing substances that are potential hazards and quantifying the risk of chemicals to human health. A basis for identifying priority chemicals has been the use of the octanol-water partition coefficient (KOW) as a criterion to estimate bioaccumulation potential. However, recognizing that the bioaccumulation process is not controlled by the hydrophobicity of a chemical alone, this thesis proposes a set of tools, incorporating chemical properties, environmental characteristics and physiological properties of organisms, to study the bioaccumulation of contaminants in aquatic ecosystems.

 In striving to achieve this objective, a tool based on an equilibrium lipid partitioning approach was used in Paper I to evaluate monitoring data for bioaccumulation of organic contaminants. In Papers II and III, mechanistic based modelling tools were developed to describe bioaccumulation of hydrophobic compounds in aquatic food webs. In Paper IV, the bioaccumulation of organic compounds in aquatic food chains was studied using stable isotopes of nitrogen. The mechanistic fate and food web models developed in this thesis provide regulators and chemical manufacturers with a means of communicating scientific information to the general public and readily applicable mechanistic fate and food web models that are easily modified for evaluative assessments purposes.

Place, publisher, year, edition, pages
Stockholm: Department of Applied Environmental Science (ITM), Stockholm University, 2009. 59 p.
Keyword
Baltic Sea, Biomagnification, Exposure, Food web, Fugacity model, Stable isotopes, Organic contaminants
National Category
Natural Sciences
Research subject
Applied Environmental Science
Identifiers
urn:nbn:se:su:diva-26383 (URN)978-91-7155-814-5 (ISBN)
Public defence
2009-04-24, Nordenskiöldsalen, Geovetenskapens hus, Svante Arrhenius väg 8 C, Stockholm, 10:00 (English)
Opponent
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Available from: 2009-04-02 Created: 2009-03-23 Last updated: 2009-04-21Bibliographically approved

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