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EC number: 231-072-3
CAS number: 7429-90-5
The available evidence shows the absence of aluminium biomagnification across trophic levels both in aquatic and terrestrial food chains. The existing information suggests not only that aluminium does not biomagnify, but rather that it tends to exhibit biodilution at higher trophic levels in the food chain. More detailed information can be found in the attached document (White paper on waiving for secondary poisoning for Al & Fe compounds final report 02-02-2010. pdf).
Bioconcentration factors (BCF) and/or
bioaccumulation factors (BAF) are typically calculated in order to
estimate bioaccumulation and biomagnification. However, it has recently
been demonstrated that unlike many organic substances, the BCF/BAF is
not independent of exposure concentration for many metals (Brix and
Deforest, 2000 and Mc Geer et al., 2003). Rather it is inversely related
(i. e., decreasing BCF/BAFs with increasing exposure concentration) to
exposure concentration. Metal
concentrations in tissue based on a range of exposure concentrations may
be quite similar but the BCFs will be quite variable reflecting an
inverse relationship (i. e., higher BCFs at lower exposure
concentrations and lower BCFs at higher exposure concentrations) between
metal concentrations and the corresponding BCF (Brix et al, 2001). From
the above it is clear that any conclusion based on the application of
classical concepts (e. g., use of bioconcentration factors; BCF
-biomagnification factors; BMF) to metals as they are applied to organic
substances should be treated with caution. As
a result, use of a simple ratio Cbiota/Cwateror Cbiota/Csediments
as an overall approach for estimating bioconcentration factors for
aluminium body burdens is not appropriate.
Brix KV, DK DeForest.
2000. Critical review of the use of bioconcentration factors for hazard
classification of metals and metal compounds. OECD (Organization for
Economic Cooperation and Development) Aquatic Hazards Extended Workshop
Meeting, May 15, Paris, France.
Brix, K. V., DeForest, D. K. and Adams, W. J. (2001),
Assessing acute and chronic copper risks to freshwater
aquatic life using species sensitivity distributions for
different taxonomic groups. Environmental Toxicology and
Chemistry, 20: 1846–1856.
and Frick. 1995. Do Stream Invertebrates Aluminium at low pH
Air and Soil Pollution 85: 407-412.
et al. 2003. Inverse relationship between bioconcentration factor and
exposure concentration for metals; implications for hazard assessment
of metals in the aquatic environment. Env. Tox. And Chem. Vol 22, No 5.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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