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EC number: 231-072-3
CAS number: 7429-90-5
In general, metals do
not biomagnify unless they are present as, or having the potential to
be, in an organic form (e.g. methylmercury). Organometals tend to be
lipid soluble, are not metabolized, and are efficiently assimilated upon
available evidence shows the absence of aluminium biomagnification across
trophic levels both in the 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). BCFs
for Aluminium can be found to range from quite low (~100) to quite high
values (11,000 – see attached pdf on White paper for waiving secondary
poisoning for iron and Aluminium. This
variance can in large part be explained by the difference in exposure
conditions for the various studies. The
inverse relationship between water and BCF/BAF values limits the ability
to describe hazard as a result of the size of the BCF, i.e., the most
pristine ecosystems have the highest BCFs. A
better approach is to directly assess the concentrations of Al at
various trophic levels in the ecosystem.
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