Difference between revisions of "Persistent"
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| − | Definition|title= | + | Definition|title= persistent |
| − | |definition= | + | |definition= The persistence of a substance reflects the potential for the substance to reach the marine environment and to be transported to remote areas as well as the potential for long-term exposure of organisms. <ref name = d>[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>}} |
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| + | ===Notes=== | ||
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| + | Persistence is one of 3 important criteria used to asses the environmental impact of a chemical substance. The other 2 are [[bioaccumulation]] and [[toxic|toxicity]]. According to OSPAR criteria a substance should be considered persistent, if it is likely to end up in the marine environment with a [[half-life]] above 50 days. <ref name = d> [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== | ||
Revision as of 11:22, 23 September 2009
Definition of persistent:
The persistence of a substance reflects the potential for the substance to reach the marine environment and to be transported to remote areas as well as the potential for long-term exposure of organisms. [1]
This is the common definition for persistent, other definitions can be discussed in the article
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Notes
Persistence is one of 3 important criteria used to asses the environmental impact of a chemical substance. The other 2 are bioaccumulation and toxicity. According to OSPAR criteria a substance should be considered persistent, if it is likely to end up in the marine environment with a half-life above 50 days. [1]
References
- ↑ 1.0 1.1 OSPAR CONVENTION 2005, Cut-Off Values for the Selection Criteria of the OSPAR Dynamic Selection and Prioritisation Mechanism for Hazardous Substances Cite error: Invalid
<ref>tag; name "d" defined multiple times with different content
