Bioaccumulation: verschil tussen versies
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− | Definition|title= | + | Definition|title= bioaccumulation |
− | |definition= Bioaccumulation is the gradual accumulation of a certain chemical into the living tissue of an organism from its environment. This accumulation may result from direct absorption from the environment or from ingestion of food particles. <ref> | + | |definition= Bioaccumulation is the gradual accumulation of a certain chemical into the living tissue of an organism from its environment. This accumulation may result from direct absorption from the environment or from ingestion of food particles. <ref>http://www.belgochlor.be/nl/B102.htm </ref>}} |
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==Notes== | ==Notes== | ||
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The concentration of bioacumulation substances usually increases in with the age of an organism. | The concentration of bioacumulation substances usually increases in with the age of an organism. | ||
− | Bioaccumulation is one of the factors used to asses the environmental hazard of a chemical. Chemicals with a higher tendency towards bioaccumulation form a greater hazard. <ref>http://www. | + | Bioaccumulation is one of the factors used to asses the environmental hazard of a chemical. Chemicals with a higher tendency towards bioaccumulation form a greater hazard. |
+ | When a substance bioaccumulates at each step of the [[food chain]] it will [[biomagnification|biomagnify]] <ref>Biology of marine birds. Schreiber, E.A. & Burger, J. (Eds). 2002. Boca Raton, Florida: CRC Press. 722 pp. </ref> | ||
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+ | Like [[toxic|tocicity]] and [[persistent|persistence]], bioaccumulation is an important criterion to determine the environmental impact of a substance. According to OSPAR criteria, a substance poses a risk for bioaccumulation when [[pollution and benthic fishes|fishes]] accumulate by direct [[adsorption]] (uptake through their gills), more than 500 times the concentration of the surrounding water.<ref>[http://www.ospar.org/documents/dbase/decrecs/agreements/05-09e_Cut-off-value%20agreement.doc OSPAR CONVENTION 2005, Cut-Off Values for the Selection Criteria of the OSPAR Dynamic Selection and Prioritisation Mechanism for Hazardous Substances ]</ref> | ||
==References== | ==References== | ||
<references/> | <references/> | ||
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+ | [[Category:Coastal and marine pollution]] |
Versie van 23 sep 2009 om 12:27
Definition of bioaccumulation:
Bioaccumulation is the gradual accumulation of a certain chemical into the living tissue of an organism from its environment. This accumulation may result from direct absorption from the environment or from ingestion of food particles. [1]
This is the common definition for bioaccumulation, other definitions can be discussed in the article
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Notes
The concentration of bioacumulation substances usually increases in with the age of an organism. Bioaccumulation is one of the factors used to asses the environmental hazard of a chemical. Chemicals with a higher tendency towards bioaccumulation form a greater hazard. When a substance bioaccumulates at each step of the food chain it will biomagnify [2]
Like tocicity and persistence, bioaccumulation is an important criterion to determine the environmental impact of a substance. According to OSPAR criteria, a substance poses a risk for bioaccumulation when fishes accumulate by direct adsorption (uptake through their gills), more than 500 times the concentration of the surrounding water.[3]
References
- ↑ http://www.belgochlor.be/nl/B102.htm
- ↑ Biology of marine birds. Schreiber, E.A. & Burger, J. (Eds). 2002. Boca Raton, Florida: CRC Press. 722 pp.
- ↑ OSPAR CONVENTION 2005, Cut-Off Values for the Selection Criteria of the OSPAR Dynamic Selection and Prioritisation Mechanism for Hazardous Substances