Aluminium Oxides – Uptake

Inhalation of finest aluminum oxide powders can cause inflammation in the lung.

Unlike the lung, the skin provides a good barrier against particles. In animal tests aluminium oxide particles (Al2O3) did not cause irritations of the skin of animals.

Aluminium (aluminum salts) occurs as a natural constituent in drinking water and other foods, especially in fruit and vegetables. The aluminum salts are taken up mainly via the food. In humans, the uptake from the gastrointestinal tract amounts to no more than 1 %.

The effect of nano-and microscale alumina was investigated in a variety of organisms, with only very high, often not environmentally relevant concentrations having a toxic effect. For boehmite, another alumina, no ecotoxicological studies are available.


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